Novel backlight module

Abstract

The embodiment of the utility model belongs to the technical field of display screens. The utility model further relates to a novel backlight module which comprises a backlight lamp box and a display screen connected with the backlight lamp box, a main screen FPC is bound on the display screen, an FPC bonding pad is arranged on the face, close to the backlight lamp box, of the main screen FPC, a lamp source assembly is arranged in the backlight lamp box, a backlight bonding pad is arranged on the lamp source assembly, and the backlight bonding pad is connected with the main screen FPC. And the backlight bonding pad is connected with the FPC bonding pad. An epitaxial backlight FPC is omitted, the backlight bonding pad is arranged on the backlight lamp box, and the FPC bonding pad is arranged on the main screen FPC, so that in the module assembly step, the FPC bonding pad and the backlight bonding pad are overlapped together while the display screen is buckled to the backlight lamp box, the welding operation is reduced through the design, meanwhile, the risk that the epitaxial backlight FPC is pulled and broken is also avoided, and the service life of the display screen is prolonged. And the quality and the reliability of the module are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen technical field more particularly, relate to a novel backlight module. BACKGROUND

[0002] In the production and manufacturing process of LCD (liquid crystal display) module, the assembly of TFT (thin film transistor) glass and backlight unit is a vital link, the traditional assembly method is to buckle TFT glass on the backlight unit, then utilize FPC (flexible circuit board) to connect the two, this connection mode is mainly realized through welding, that is, the FPC on TFT glass and the FPC on backlight unit are welded to ensure the stable transmission of electric signal;

[0003] However, this traditional welding mode has many deficiencies, first, from the angle of manufacturing cost, welding operation needs to rely on a large number of human resources, especially in the post of manual welding, which not only increases the personnel cost of enterprises, but also may lead to the reduction of production efficiency;And the extended backlight FPC is extremely easy to be pulled in the manufacturing and assembly process, leading to the loosening of solder pad, the solder pad is the key part of FPC and electronic component connection, once the solder pad loosens, it will lead to the interruption of electric signal transmission, thereby affecting the normal work of LCD module. Therefore we improve it and propose a novel backlight module. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the embodiment of the utility model is that manual welding post human resources need to be increased for welding, and the extended backlight FPC has the problem of loosening of solder pad caused by pulling and breaking.

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme as follows:

[0006] A novel backlight module, comprising: a backlight lamp box and a display screen connected with the backlight lamp box, a main screen FPC is bound on the display screen, one side of the main screen FPC close to the backlight lamp box is provided with an FPC solder pad, a light source assembly is arranged in the backlight lamp box, and a backlight solder pad is arranged on the light source assembly, and the backlight solder pad is connected with the FPC solder pad. The application cancels the extended backlight FPC, and sets the backlight solder pad on the backlight lamp box and the FPC solder pad on the main screen FPC, so that in the module assembly step, the display screen is buckled to the backlight lamp box, and the FPC solder pad and the backlight solder pad are overlapped together, this design not only reduces the welding operation, but also avoids the risk of pulling and breaking of the extended backlight FPC, improves the quality and reliability of the module.

[0007] As an improved mode of the utility model, a conductive double-sided adhesive is arranged on the backlight solder pad, and the conductive double-sided adhesive is bonded with the FPC solder pad.

[0008] As an improved mode of the utility model, the lamp source assembly includes a plurality of LED lamps arranged in the backlight lamp box, a plurality of the LED lamp assemblies are connected with ITO wiring, and the backlight pad is connected with the ITO wiring.

[0009] As an improved mode of the utility model, the front surface of the main screen FPC is provided with an electromagnetic shielding layer, and the electromagnetic shielding layer covers around the FPC pad.

[0010] As an improved mode of the utility model, the main screen FPC is provided with an FPC connector at one end away from the display screen.

[0011] As an improved mode of the utility model, the main screen FPC is provided with a reinforcing plate, and the reinforcing plate and the FPC connector are respectively located on the two sides of the main screen FPC.

[0012] As an improved mode of the utility model, the reinforcing plate is made of stainless steel.

[0013] As an improved mode of the utility model, the surface of the main screen FPC is covered with a wear-resistant coating, and the wear-resistant coating is made of polyurethane material, which can effectively protect the surface of the main screen FPC.

[0014] As an improved mode of the utility model, the edge of the main screen FPC is designed with a round corner.

[0015] As an improved mode of the utility model, a sealing rubber strip is arranged between the backlight lamp box and the display screen, and the sealing rubber strip is made of rubber material.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In order to solve the problems of the need for increasing manual welding post in the prior art, the problem of pull-off and breakage of the epitaxial backlight FPC, and the problem of pad loosening caused by pulling, the application cancels the epitaxial backlight FPC, sets a backlight pad on the backlight lamp box, and sets an FPC pad on the main screen FPC, so that in the module assembly step, the display screen is buckled to the backlight lamp box, and the FPC pad and the backlight pad are overlapped together, which not only reduces the welding operation, but also avoids the risk of pull-off and breakage of the epitaxial backlight FPC, and improves the quality and reliability of the module. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure schematic view of the novel backlight module is provided for the application;

[0019] Figure 2 The structure schematic view of the backlight lamp box of the novel backlight module is provided for the application;

[0020] Figure 3 The structural schematic diagram of the display screen of the novel backlight module provided in the application is shown in the figure.

[0021] Figure 4 The structural schematic diagram of the novel backlight module provided in the application is shown in the figure. Figure 2 The structural schematic diagram of the novel backlight module provided in the application is shown in the figure.

[0022] The figure shows:

[0023] 1, backlight box; 101, backlight pad; 102, conductive double-sided adhesive; 103, LED lamp; 2, display screen; 201, main screen FPC; 202, FPC pad; 203, FPC connector. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the term "exemplary" means that an example is being described, and that the example can include features that are not described in connection with the example. The use of the term "example" in the description is not meant to be limiting of the application. The terms "comprising," "including," and "having," as used in this description, are meant to be inclusive.

[0025] As described in the background, the traditional assembly method is to buckle the TFT glass on the backlight unit, and then connect the two by FPC (flexible circuit board), and the connection is mainly realized by welding, that is, the FPC on the TFT glass is welded with the FPC on the backlight unit to ensure stable transmission of electrical signals; however, this traditional welding method has many shortcomings, first of all, from the perspective of manufacturing cost, the welding operation needs to rely on a large number of human resources, especially in the post of manual welding, which not only increases the labor cost of the enterprise, but also may lead to the reduction of production efficiency; and the extended backlight FPC is easily pulled during manufacturing and assembly, resulting in the loosening of the solder pad, which is the key part of the connection between the FPC and the electronic element, and once the solder pad is loosened, the transmission of electrical signals will be interrupted, thereby affecting the normal work of the LCD module.

[0026] In order to solve this technical problem, the application provides a novel backlight module.

[0027] Specifically, please refer to Figures 1-4 The novel backlight module specifically comprises:

[0028] The backlight lamp box 1 and the display screen 2 connected with the backlight lamp box 1 are provided with the main screen FPC 201, the FPC pad 202 is arranged on one side of the main screen FPC 201 close to the backlight lamp box 1, the light source assembly is arranged in the backlight lamp box 1, and the backlight pad 101 is arranged on the light source assembly and connected with the FPC pad 202.

[0029] The novel backlight module provided by the utility model cancels the epitaxial backlight FPC, and the backlight pad 101 is arranged on the backlight lamp box 1, and the FPC pad 202 is arranged on the main screen FPC 201, so that in the module assembly step, the display screen 2 is buckled to the backlight lamp box 1 at the same time, the FPC pad 202 and the backlight pad 101 are overlapped together, the design not only reduces the welding operation, but also avoids the risk of pulling and breaking the epitaxial backlight FPC, and the quality and reliability of the module are improved.

[0030] In order for those skilled in the art to better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings.

[0031] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0032] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] Embodiment one of the novel backlight module

[0034] Please refer to Figures 1-4 The novel backlight module comprises: a backlight lamp box 1 and a display screen 2 connected with the backlight lamp box 1, the display screen 2 is provided with a main screen FPC 201, an FPC pad 202 is arranged on one side of the main screen FPC 201 close to the backlight lamp box 1, a light source assembly is arranged in the backlight lamp box 1, and a backlight pad 101 is arranged on the light source assembly and connected with the FPC pad 202; the utility model cancels the epitaxial backlight FPC, and the backlight pad 101 is arranged on the backlight lamp box 1, and the FPC pad 202 is arranged on the main screen FPC 201, so that in the module assembly step, the display screen 2 is buckled to the backlight lamp box 1 at the same time, the FPC pad 202 and the backlight pad 101 are overlapped together, the design not only reduces the welding operation, but also avoids the risk of pulling and breaking the epitaxial backlight FPC, and the quality and reliability of the module are improved.

[0035] In the traditional backlight module design, the extended backlight FPC needs to be welded, and the welding process is not only cumbersome, but also requires high skill of welding process and operator, which is easy to cause problems such as virtual welding and short circuit, affecting the performance and quality of the module. After the cancellation of the extended backlight FPC in the present application, the welding of this part is no longer needed, reducing the hidden trouble caused by poor welding and improving the yield of the product. At the same time, the extended backlight FPC is easy to be broken by external force during the assembly, use and transportation of the module, and once it is broken, the backlight module cannot work normally and needs to be repaired or replaced, which increases the cost and time cost. After the cancellation of the extended backlight FPC, the risk is avoided, and the structure of the module is more stable and reliable. In addition, reducing the welding operation can shorten the assembly time, improve the production efficiency and reduce the production cost.

[0036] Further, as shown in Figure 4 The conductive double-sided adhesive 102 is provided on the backlight pad 101, and the conductive double-sided adhesive 102 is bonded with the FPC pad 202. The conductive double-sided adhesive 102 is connected and conducted with the FPC pad 202, and then welding is not needed. The bonding operation is convenient and easy to use.

[0037] Welding operation usually requires professional welding equipment and skilled operators, and the purchase and maintenance cost of the equipment is high. The training of the operator also needs to spend a certain amount of time and effort. Using the conductive double-sided adhesive 102 for bonding only needs to be accurately pasted on the corresponding pad, without the need for complex equipment and professional skills. Ordinary workers can operate skillfully after simple training, greatly reducing the difficulty and cost of assembly. Moreover, the conductive double-sided adhesive 102 has good conductivity, which can ensure the stable transmission of signals and current and ensure the normal work of the backlight module. In addition, during the later maintenance process, if the connection part needs to be checked or replaced, the connection method using the conductive double-sided adhesive 102 is easier to disassemble and reassemble, improving the maintenance efficiency.

[0038] Further, as shown in Figure 2As shown, the lamp source assembly includes a plurality of LED lamps 103 arranged in the backlight lamp box 1, the plurality of LED lamp 103 assemblies are connected with ITO wires, and the backlight pad 101 is connected with the ITO wires; the ITO wires have good conductivity and transparency, can provide stable power supply and signal transmission path for the LED lamp 103, compared with the traditional wiring mode, the resistance of the ITO wires is smaller, can reduce the loss of electric energy, reduce the energy consumption of the backlight module, at the same time, the stable power supply and signal transmission can ensure that each LED lamp 103 can work normally, emit light uniformly, avoid the problems of uneven brightness, flicker and the like, improve the display quality of the backlight module, in addition, the stable working environment is also helpful to prolong the service life of the LED lamp 103, reduce the damage to the LED lamp 103 caused by voltage fluctuation, unstable current and the like.

[0039] The embodiment two of the novel backlight module

[0040] Further, the front surface of the main screen FPC 201 is provided with an electromagnetic shielding layer, the electromagnetic shielding layer covers around the FPC pad 202, the electromagnetic shielding layer adopts copper foil material, so as to reduce the influence of electromagnetic interference on signal transmission, the copper foil has good conductivity and shielding performance, can form a closed shielding space, blocks the external electromagnetic interference signal outside the shielding layer, and protects the circuit around the FPC pad 202 from interference.

[0041] Further, as shown in the figure, Figure 1 As shown, one end of the main screen FPC 201 away from the display screen 2 is provided with an FPC connector 203; in the assembly and use process of the electronic equipment, the main screen FPC 201 needs to be connected with other equipment or circuit, so as to realize signal transmission and communication between devices, the traditional connection mode may need to carry out complex welding or wire arrangement operation, not only the operation difficulty is big, but also the reliability of connection is low, and problems such as looseness and poor contact are prone to occur, and the FPC connector 203 is a specially designed interface, has the advantages of convenient plugging, stable connection and good signal transmission performance; through the FPC connector 203, the main screen FPC 201 can be connected with other equipment or circuit, reduces the connection time and cost, at the same time, when the product needs to be upgraded or maintained, only the corresponding FPC connector 203 or equipment needs to be replaced, so that the function expansion and fault elimination of the product can be conveniently realized.

[0042] Further, the main screen FPC 201 is provided with a reinforcing plate, and the reinforcing plate and the FPC connector 203 are located on both sides of the main screen FPC 201 respectively; during use, especially at the position connected with the FPC connector 203, the main screen FPC 201 will bear a large pulling force and pressure, and if there is no support of the reinforcing plate, the main screen FPC 201 is prone to bending, breaking and other problems, resulting in signal transmission interruption or instability, the reinforcing plate can increase the rigidity and strength of the main screen FPC 201, so that it can bear greater external force; at the same time, the reinforcing plate and the FPC connector 203 are located on both sides of the main screen FPC respectively, so as to form a balanced structure, reduce stress concentration, and further improve the stability and reliability of the main screen FPC 201.

[0043] Further, the reinforcing plate is made of stainless steel; stainless steel is a kind of metal material with high strength and good corrosion resistance, which can effectively enhance the structural strength of the main screen FPC 201, so that it can bear greater external force impact and bending, and the corrosion resistance of stainless steel can prevent the reinforcing plate from rusting and corroding in humid, high temperature, acid and alkali and other harsh environments, so as to ensure the long-term effectiveness of the protection of the main screen FPC 201, in addition, the stainless steel material also has good processing performance, which can be accurately processed according to the shape and size of the main screen FPC 201, so as to ensure the adhesion of the reinforcing plate and the main screen FPC 201.

[0044] Embodiment three of the novel backlight module

[0045] Further, the surface of the main screen FPC 201 is covered with a wear-resistant coating, and the wear-resistant coating is made of polyurethane material, which can effectively protect the surface of the main screen FPC 201; during assembly, use and transportation of the backlight module, the surface of the main screen FPC 201 is prone to friction and scratching with other components, resulting in damage to the surface insulation layer or conductive circuit, thereby affecting the electrical performance, the polyurethane material has good wear resistance, flexibility and chemical corrosion resistance, and can form a protective film on the surface of the main screen FPC 201, the protective film can effectively resist friction, scratching and wear, and protect the surface of the main screen FPC 201 from damage, at the same time, the polyurethane coating also has good insulation performance, which will not affect the electrical performance of the main screen FPC 201, and ensures the stability of signal transmission.

[0046] Further, the edge of the main screen FPC 201 is designed with a round corner; the round corner design eliminates the sharp part of the edge of the main screen FPC 201, so that the edge is more round, and in the process of contacting or installing with other components, the scratch on other components is reduced, and the integrity of other components is protected.

[0047] Further, the sealing rubber strip is arranged between the backlight box 1 and the display screen 2, the sealing rubber strip is made of rubber material, has the functions of waterproof and dustproof, so as to prevent dust and moisture from entering the backlight box 1 and affecting the normal work of the light source assembly.

[0048] In use, the conductive double-sided adhesive 102 is adhered to the backlight pad 101, when the display screen 2 and the backlight box 1 are connected together, the FPC pad 202 and the conductive double-sided adhesive 102 are adhered together, and the conductive double-sided adhesive 102 is connected with the FPC pad 202 and the backlight pad 101.

[0049] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, the preferable embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A novel backlight module, characterized in that, Include: Backlight box (1) and the display screen (2) connected with backlight box (1), the display screen (2) is bound with main screen FPC (201), the main screen FPC (201) is provided with FPC pad (202) on the side close to backlight box (1), the backlight box (1) is provided with light source assembly, and the light source assembly is provided with backlight pad (101), the backlight pad (101) is connected with FPC pad (202).

2. The novel backlight module according to claim 1, characterized in that, The backlight pad (101) is provided with conductive double-sided adhesive (102), and the conductive double-sided adhesive (102) is bonded with FPC pad (202).

3. The novel backlight module according to claim 2, characterized in that, The light source assembly includes a plurality of LED lamps (103) arranged in the backlight box (1), a plurality of the LED lamp (103) assembly is connected with ITO wire, and the backlight pad (101) is connected with ITO wire.

4. The novel backlight module according to claim 3, characterized in that, The front of the main screen FPC (201) is provided with an electromagnetic shielding layer, and the electromagnetic shielding layer covers around the FPC pad (202).

5. The novel backlight module according to any one of claims 1-4, characterized in that, The main screen FPC (201) is provided with FPC connector (203) away from the display screen (2) end.

6. The novel backlight module according to claim 5, characterized in that, The main screen FPC (201) is provided with a reinforcing plate, and the reinforcing plate and FPC connector (203) are respectively located on both sides of the main screen FPC (201).

7. The novel backlight module according to claim 6, characterized in that, The reinforcing plate is made of stainless steel.

8. The novel backlight module according to claim 7, characterized in that, The surface of the main screen FPC (201) is covered with a wear-resistant coating, and the wear-resistant coating is made of polyurethane material, which can effectively protect the surface of the main screen FPC (201).

9. The novel backlight module according to claim 8, characterized in that, The edge of the main screen FPC (201) is designed with a round corner.

10. The novel backlight module according to claim 9, characterized in that, The backlight box (1) and the display screen (2) are provided with a sealing rubber strip, and the sealing rubber strip is made of rubber material.

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