Display module capable of reducing vibration amplitude of FPC (Flexible Printed Circuit)

Abstract

The utility model discloses a display module capable of reducing the vibration amplitude of an FPC (Flexible Printed Circuit), which comprises a backlight module and a display module, and the backlight module is provided with a backlight iron stand; an FPC is led out of the display module, the FPC is bent to the lower surface of the backlight iron stand, an electronic component area is arranged on the upper surface of the FPC located on the lower surface of the backlight iron stand, an MLCC capacitor is arranged on the electronic component area, a PCB is fixed to the lower surface of the FPC located in the electronic component area, a double-faced adhesive tape is pasted to the lower surface of the PCB, and the double-faced adhesive tape is arranged on the lower surface of the backlight iron stand. And the FPC is adhered and fixed with the lower surface of the backlight iron stand through the double-sided adhesive tape. The PCB with a certain thickness is attached to the corresponding area of the electronic component on the back surface of the FPC, so that the FPC in the area can be fixed on the PCB, the vibration amplitude of the FPC caused by capacitor vibration is reduced, the noise caused by the vibration of the FPC is reduced, the hiss noise is avoided, and the use experience of consumers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a display module capable of reducing the vibration amplitude of an FPC. Background Art

[0002] Currently, the display module of a mobile phone is mainly composed of a panel, FPC, a driver IC and a backlight module. The entire mobile phone provides the necessary power and control model to the driver IC of the display module through the FPC, so that it drives the panel and displays the required image.

[0003] There is usually a certain area on the FPC for SMT of electronic components such as resistors, MLCC capacitors and diodes required by some ICs to filter, stabilize the voltage and provide electrostatic protection for the corresponding circuits to ensure the normal operation of the driver IC.

[0004] Some MLCC capacitors are connected in the circuit of AC signal. When the electric field applied to both ends of the capacitor changes, due to its special structure, it can cause proportional mechanical stress vibration change, which is the reverse piezoelectric effect; at the same time, it further drives the FPC to vibrate. When in a relatively quiet place or when answering a call, the display screen is close to the human ear, and the vibration frequency of the capacitor and FPC falls within the hearing range of the human ear, a "hissing" noise will be generated, affecting the consumer's experience. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to reduce the vibration amplitude of the FPC, thereby reducing the noise caused by the vibration of the FPC, avoiding the generation of "hissing" noise, and improving the consumer's use experience.

[0006] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0007] To solve the above technical problems, the utility model provides a display module that reduces the vibration amplitude of an FPC, which includes a backlight module and a display module, the backlight module is provided with a backlight iron frame; the display module leads out an FPC, the FPC is bent to the lower surface of the backlight iron frame, an electronic component area is provided on the upper surface of the FPC located on the lower surface of the backlight iron frame, an MLCC capacitor is provided on the electronic component area, a PCB board is fixed to the lower surface of the FPC located in the electronic component area, a double-sided adhesive is pasted on the lower surface of the PCB board, and the FPC is pasted and fixed to the lower surface of the backlight iron frame by the double-sided adhesive.

[0008] As a preferred embodiment of the display module for reducing the vibration amplitude of FPC provided by the utility model, the FPC includes a main body, a reinforcement plate and a connector, the reinforcement plate is fixed to the upper surface of the end of the main body, both ends of the reinforcement plate have fixed parts extending outward, both of the two fixing parts exceed the edge of the main body, and the lower surfaces of the two fixing parts are fixed with first strong magnetic blocks, the connector is arranged below the main body, and two second strong magnetic blocks corresponding to the two first strong magnetic blocks are fixed on the connector.

[0009] As a preferred implementation of the display module for reducing the vibration amplitude of the FPC provided by the utility model, two grooves are provided on the connector, and the two second strong magnetic blocks are respectively fixed in the two grooves.

[0010] As a preferred implementation of the display module for reducing the vibration amplitude of the FPC provided by the utility model, the edge of the groove is provided with a chamfer.

[0011] As a preferred implementation of the display module for reducing the vibration amplitude of the FPC provided by the utility model, the chamfer is a right angle.

[0012] As a preferred implementation of the display module for reducing the vibration amplitude of the FPC provided by the utility model, the chamfer is a rounded corner.

[0013] As a preferred embodiment of the display module for reducing FPC vibration amplitude provided by the utility model, the outer dimensions of the second strong magnetic block are larger than the outer dimensions of the first strong magnetic block, and the outer dimensions of the groove correspond to the outer dimensions of the first strong magnetic block and the second strong magnetic block.

[0014] As a preferred implementation of the display module for reducing the vibration amplitude of the FPC provided by the utility model, the depth of the groove is equal to the sum of the thickness of the first strong magnetic block and the second strong magnetic block.

[0015] As a preferred implementation of the display module for reducing the vibration amplitude of FPC provided by the utility model, the materials of the first strong magnetic block and the second strong magnetic block are both neodymium iron boron strong magnets.

[0016] As a preferred implementation of the display module for reducing the vibration amplitude of the FPC provided by the utility model, the first strong magnetic block and the second strong magnetic block have different colors.

[0017] The utility model has the following beneficial effects:

[0018] A PCB board of a certain thickness is attached to the area corresponding to the electronic components on the back of the FPC. This can fix the FPC in this area on the PCB board, reduce the vibration amplitude of the FPC caused by capacitor vibration, thereby reducing the noise caused by FPC vibration, avoiding "hissing" noise, and improving consumers' usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 The utility model provides a structural schematic diagram of a display module for reducing the vibration amplitude of FPC.

[0021] Figure 2 for Figure 1 Bottom view of .

[0022] Figure 3 It is a schematic diagram of the structure of the FPC located in the electronic component area.

[0023] Figure 4 Schematic diagram of the improved structure of FPC.

[0024] Description of Figure Numbers:

[0025] Backlight module 100; display module 200; backlight iron frame 1; FPC 2; electronic component area 300; PCB board 3; double-sided adhesive 4;

[0026] The main body 21 ; the reinforcing plate 22 ; the connector 23 ; the fixing portion 24 ; the first strong magnetic block 25 ; the second strong magnetic block 26 ; and the groove 27 . DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] The utility model provides a display module for reducing the vibration amplitude of an FPC, which comprises a backlight module and a display module, wherein the backlight module is provided with a backlight iron frame; an FPC is led out of the display module, the FPC is bent to the lower surface of the backlight iron frame, an electronic component area is provided on the upper surface of the FPC located on the lower surface of the backlight iron frame, an MLCC capacitor is provided on the electronic component area, a PCB board is fixed to the lower surface of the FPC located in the electronic component area, a double-sided adhesive is pasted on the lower surface of the PCB board, and the FPC is pasted and fixed to the lower surface of the backlight iron frame by the double-sided adhesive.

[0031] A PCB board of a certain thickness is attached to the area corresponding to the electronic components on the back of the FPC. This can fix the FPC in this area on the PCB board, reduce the vibration amplitude of the FPC caused by capacitor vibration, thereby reducing the noise caused by FPC vibration, avoiding "hissing" noise, and improving consumers' usage experience.

[0032] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.

[0033] See also Figures 1 to 3 , a display module 200 for reducing the vibration amplitude of FPC2 provided by the utility model, which includes a backlight module 100 and a display module 200, the backlight module 100 is provided with a backlight iron frame 1; the display module 200 leads out FPC2, the FPC2 is bent to the lower surface of the backlight iron frame 1, the upper surface of the FPC2 located on the lower surface of the backlight iron frame 1 is provided with an electronic component area 300, the electronic component area 300 is provided with an MLCC capacitor, the lower surface of the FPC2 located in the electronic component area 300 is fixed with a PCB board 3, the lower surface of the PCB board 3 is pasted with a double-sided adhesive 4, and the FPC2 is pasted and fixed to the lower surface of the backlight iron frame 1 through the double-sided adhesive 4. A PCB board 3 of a certain thickness is attached to the electronic component corresponding area on the back of the FPC2, so that the FPC2 in this area can be fixed on the PCB board 3, reducing the vibration amplitude of the FPC2 caused by the capacitor vibration, thereby reducing the noise caused by the vibration of the FPC2, avoiding the generation of "hissing" noise, and improving the consumer's experience.

[0034] See also Figure 3 and Figure 4 As a further optimization scheme of Example 1, in this embodiment, FPC2 includes a body 21, a reinforcement plate 22 and a connector 23. The reinforcement plate 22 is fixed to the upper surface of the end of the body 21. Both ends of the reinforcement plate 22 have fixed parts 24 extending outward. The two fixed parts 24 are beyond the edge of the body 21. The lower surfaces of the two fixed parts 24 are fixed with first strong magnetic blocks 25; the connector 23 is arranged below the body 21, and two second strong magnetic blocks 26 corresponding to the two first strong magnetic blocks 25 are fixed on the connector 23. Since the upper surface of the body 21 is fixed with a reinforcing plate 22, both ends of the reinforcing plate 22 are fixed with a first strong magnetic block 25, and the connector 23 is fixed with two second strong magnetic blocks 26 corresponding to the two first strong magnetic blocks 25, when the body 21 and the connector 23 are installed, as long as the two ends of the body 21 are close to the connector 23, the first strong magnetic blocks 25 at both ends of the body 21 and the second strong magnetic blocks 26 at both ends of the connector 23 will attract each other and be fixed, and the body 21 and the connector 23 can be automatically aligned and tightly connected. This FPC2 assembly structure has few assembly steps, and only needs The assembly can be achieved by bringing the main body 21 and the connector 23 close together. The assembly efficiency of FPC2 can be greatly improved, and the automatic assembly of FPC2 and the connector 23 can be easily realized. The fewer the assembly steps, the lower the probability of defective FPC2 during assembly, thereby avoiding the situation where the products assembled with it cannot work normally due to poor assembly, thereby avoiding abnormal operation of the product, reducing the defective rate of the product, and thus greatly reducing the production and manufacturing costs of FPC2, thereby improving the product competitiveness of FPC2, thereby meeting the company's growing quality requirements.

[0035] Furthermore, two grooves 27 are provided on the connector 23, and two second strong magnetic blocks 26 are respectively fixed in the two grooves 27, so that the fit between the main body 21 and the connector 23 is more compact, and the reliability of assembly is improved, thereby greatly reducing the production and manufacturing costs of FPC2, and further improving the product competitiveness of FPC2, so as to meet the company's growing quality requirements.

[0036] Furthermore, the edge of the groove 27 is provided with a chamfer, and more preferably, the chamfer is a right angle or a rounded angle, so that when the first strong magnetic block 25 is close to the second strong magnetic block 26, it can fall accurately into the groove 27 under the guidance of the chamfer, thereby improving the accuracy and reliability of assembly, thereby greatly reducing the production and manufacturing costs of FPC2, and further improving the product competitiveness of FPC2.

[0037] Furthermore, the outer dimensions of the second strong magnetic block 26 are larger than those of the first strong magnetic block 25, and the outer dimensions of the groove 27 correspond to those of the first strong magnetic block 25 and the second strong magnetic block 26, so that the second strong magnetic block 26 can be firmly fixed in the groove 27. Even if the suction force of the first strong magnetic block 25 is large, the second strong magnetic block 26 will not be sucked out, thereby improving the reliability of assembly, thereby greatly reducing the production and manufacturing costs of FPC2, and further improving the product competitiveness of FPC2, thereby meeting the company's growing quality requirements.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, 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 is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A display module for reducing the vibration amplitude of FPC, characterized in that: It includes: A backlight module is provided with a backlight iron frame; A display module is provided with an FPC, the FPC is bent to the lower surface of the backlight iron frame, an electronic component area is arranged on the upper surface of the FPC located on the lower surface of the backlight iron frame, an MLCC capacitor is arranged on the electronic component area, a PCB board is fixed on the lower surface of the FPC located in the electronic component area, a double-sided adhesive is pasted on the lower surface of the PCB board, and the FPC is pasted and fixed to the lower surface of the backlight iron frame by the double-sided adhesive.

2. The display module for reducing FPC vibration amplitude according to claim 1, characterized in that: The FPC includes a body, a reinforcement plate and a connector, wherein the reinforcement plate is fixed to the upper surface of the end of the body, both ends of the reinforcement plate have fixing parts extending outward, both fixing parts exceed the edge of the body, and the lower surfaces of the two fixing parts are fixed with first strong magnetic blocks, and the connector is arranged below the body, and two second strong magnetic blocks corresponding to the two first strong magnetic blocks are fixed on the connector.

3. The display module for reducing FPC vibration amplitude according to claim 2, characterized in that: The connector is provided with two grooves, and the two second strong magnetic blocks are respectively fixed in the two grooves.

4. The display module for reducing FPC vibration amplitude according to claim 3, characterized in that: The edge of the groove is provided with a chamfer.

5. The display module for reducing FPC vibration amplitude according to claim 4, characterized in that: The chamfer is a right angle.

6. The display module for reducing FPC vibration amplitude according to claim 4, characterized in that: The chamfer is a rounded corner.

7. The display module for reducing FPC vibration amplitude according to claim 3, characterized in that: The outer dimensions of the second strong magnetic block are greater than those of the first strong magnetic block, and the outer dimensions of the groove correspond to those of the first strong magnetic block and the second strong magnetic block.

8. The display module for reducing FPC vibration amplitude according to claim 3, characterized in that: The depth of the groove is equal to the sum of the thicknesses of the first strong magnetic block and the second strong magnetic block.

9. The display module for reducing FPC vibration amplitude according to claim 2, characterized in that: The first strong magnetic block and the second strong magnetic block are both made of strong neodymium iron boron magnets.

10. The display module for reducing FPC vibration amplitude according to claim 2, characterized in that: The first strong magnetic block and the second strong magnetic block have different colors.

Images