LCM (liquid crystal module) with flat cable welded on PCB (printed circuit board)

Abstract

An LCM (liquid crystal module) with a flat cable welded on a PCB (printed circuit board) comprises an LCD, the PCB and the flat cable, the LCD is arranged in the center of the front surface of the PCB; the PCB is provided with a plurality of PCB open grooves, the PCB is provided with a plurality of semicircular metal through holes, and flat cables are arranged in the PCB open grooves. According to the LCM with the flat cable welded on the PCB, the semicircular metal through holes formed in the PCB correspond to and are communicated with the slots of the PCB, meanwhile, the slot bodies of the slots of the PCB extend to the edge of the bottom of the PCB, the flat cable can be directly inserted into the slots to be fixedly connected with the semicircular metal through holes, meanwhile, the welding mode of soldering tin is that welding is carried out from the two sides of the PCB, and the welding efficiency is greatly improved. Therefore, the joint of the flat cable and the PCB is not raised at a high position, and structural interference is prevented from occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display screens, in particular to an LCM for welding wiring on a PCB. Background Art

[0002] Currently, LCD screens are all soldered to the PCB via metal PINs, and then a flat cable is soldered to the PCB. This flat cable is connected to the terminal motherboard and is used to transmit signals to drive the LCD. Because the flat cable is soldered to the PCB, the thickness of this type of cable is generally around 1.0 mm. After tinning, the height of the added solder is about 1.2 to 1.5 mm, which means that the entire cable is raised. If the terminal does not avoid this raised cable, interference will occur in the structure. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an LCM for welding flat wires on a PCB.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A LCM for welding a flat cable on a PCB comprises: an LCD, a PCB and a flat cable; the LCD is arranged at the center of the front side of the PCB; the PCB is provided with a plurality of PCB slots, the PCB is provided with a plurality of semicircular metal vias, and the flat cable is arranged in the PCB slot.

[0006] In one of the embodiments, a plurality of the PCB slots are arranged at the bottom of the center of the front side of the PCB, and a plurality of the PCB slots are arranged horizontally and equidistantly.

[0007] In one of the embodiments, the number of the semicircular metal vias is the same as the number of the PCB slots, and each of the semicircular metal vias is connected to each of the PCB slots.

[0008] In one of the embodiments, the flat cable is disposed in each of the PCB slots, and solder is welded on the front and back of the connection between the flat cable and the PCB slot.

[0009] In one of the embodiments, the front and back sides of the connection between the flat cable and the semicircular metal via are both adhered with single-sided adhesive tape.

[0010] In one of the embodiments, the PCB slot body extends downward to the bottom of the front side of the PCB body to form an outward opening, and the width of the PCB slot body is 1.25 mm.

[0011] In one of the embodiments, the inner diameter and outer diameter of the semicircular metal via are 1.0 mm and 1.5 mm respectively, and the semicircular metal via is fixedly connected to the flat cable located in the corresponding PCB slot.

[0012] In one of the embodiments, during the soldering, it is necessary to pay attention to soldering from both sides of the PCB, and the thickness of the cable is smaller than the thickness of the PCB.

[0013] In one of the embodiments, the single-sided adhesive tape covers all the solder joints on the PCB, and the edge of the bottom of the single-sided adhesive tape is flush with the edge of the bottom of the PCB.

[0014] In one of the embodiments, the LCD is fixed by two rows of metal clamps on the upper and lower sides of the front side of the PCB.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The LCM for welding flat cables on a PCB of the present invention has a semicircular metal via hole opened on the PCB and a PCB slot corresponding to and interpenetrating with each other, and the slot body of the PCB slot extends to the edge of the bottom of the PCB, so that the flat cable can be directly inserted into the slot and fixedly connected with the semicircular metal via hole. At the same time, the soldering method is also to solder from both sides of the PCB, so that the soldering point will not be too protruding, so that the connection between the flat cable and the PCB will not be high protruding, thereby preventing structural interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the front side of the LCM for welding the wiring on the PCB of the utility model;

[0019] Figure 2 This is a schematic diagram of the front structure of the PCB of the LCM with the wiring soldered on the PCB of the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the LCM with the wires welded on the PCB and the PCB according to the utility model;

[0021] Figure 4This is a schematic diagram of the overall structure of the LCD side of the LCM with the wiring welded on the PCB of the utility model;

[0022] Figure 5 The utility model is a schematic diagram of the connection structure between the LCM with flat cables welded on the PCB and the side surface of the PCB.

[0023] In the figure: 1. LCD; 2. PCB; 21. PCB slot; 22. Semicircular metal via; 23. Solder; 24. Single-sided adhesive tape; 3. Cable arrangement. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0025] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0026] Unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] like Figure 1-5As shown, an LCM for welding a flat cable on a PCB includes: LCD1, PCB2 and a flat cable 3; LCD1, LCD1 is arranged at the center of the front of PCB2; PCB2, PCB2 is provided with a plurality of PCB slots 21, PCB2 is provided with a plurality of semicircular metal vias 22, and a flat cable 3 is arranged in the PCB slot 21. It should be noted that when welding the flat cable 3 on PCB2, a hole is opened for each flat cable 3, so that a single flat cable 3 is extended from the hole and welded to PCB2, the thickness of the flat cable 3 is 0.7-0.9mm, and the thickness of PCB2 is 1.6mm, which means that the flat cable 3 is embedded in PCB2, so that the flat cable 3 can be prevented from protruding, occupying space, and causing structural interference problems.

[0029] like Figure 1-3 As shown, in one embodiment, a plurality of PCB slots 21 are arranged at the bottom of the center of the front side of the PCB 2, and the plurality of PCB slots 21 are arranged horizontally and equidistantly. It should be noted that the number of PCB slots 21 is the same as the number of cables 3 to be connected.

[0030] like Figure 1-3 As shown, in one embodiment, the number of the semicircular metal vias 22 is the same as the PCB slots 21, and each semicircular metal via 22 is connected to each PCB slot 21. The inner diameter and outer diameter of the semicircular metal via 22 are 1.0 mm and 1.5 mm respectively, and the semicircular metal via 22 is fixedly connected to the flat cable 3 located in the corresponding PCB slot 21. It should be noted that the metal core at the top of the flat cable 3 is fixedly connected to the semicircular metal via 22.

[0031] like Figure 3 As shown, in one embodiment, the flat cable 3 is arranged in each PCB slot 21, and solder 23 is welded on the front and back of the connection between the flat cable 3 and the PCB slot 21. When soldering the solder 23, it is necessary to pay attention to soldering from both sides of the PCB 2, and the thickness of the flat cable 3 is less than the thickness of the PCB 2. It should be noted that when performing soldering, the height of the solder 23 should be minimized.

[0032] like Figure 3 As shown in the figure, in one embodiment, the front and back of the connection between the flat cable 3 and the semicircular metal via 22 are both attached with a single-sided adhesive tape 24. The single-sided adhesive tape 24 covers all the solder points 23 on the PCB 2, and the bottom edge of the single-sided adhesive tape 24 is flush with the bottom edge of the PCB 2. It should be noted that the fixing effect between the flat cable 3 and the PCB 2 is enhanced to prevent the flat cable 3 from being separated from the PCB 2 due to external force.

[0033] like Figure 5As shown in the figure, in one embodiment, the body of the PCB slot 21 extends downward to the bottom of the front of the PCB 2 to form an outward opening, and the width of the body of the PCB slot 21 is 1.25 mm. It should be noted that the width of the cable 3 is smaller than the diameter of the body of the PCB slot 21.

[0034] like Figure 1-5 As shown, in one embodiment, LCD1 is fixed by two rows of metal clamps on the front of PCB2. It should be noted that LCD1 is a liquid crystal display screen, PCB2 refers to a printed circuit board, and LCM refers to a liquid crystal display module.

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An LCM for welding flat cables on a PCB, characterized in that: include: LCD (1), PCB (2) and cable (3); An LCD (1), wherein the LCD (1) is arranged at the center of the front side of the PCB (2); A PCB (2), wherein a plurality of PCB slots (21) are arranged on the PCB (2), a plurality of semicircular metal vias (22) are arranged on the PCB (2), and a flat cable (3) is arranged in the PCB slot (21).

2. The LCM for welding flat cables on a PCB according to claim 1, characterized in that: A plurality of the PCB slots (21) are arranged at the bottom of the center of the front side of the PCB (2), and the plurality of the PCB slots (21) are arranged horizontally and equidistantly.

3. The LCM for welding flat cables on a PCB according to claim 1, characterized in that: The number of the semicircular metal vias (22) is the same as the number of the PCB slots (21), and each of the semicircular metal vias (22) is connected to each of the PCB slots (21).

4. The LCM for welding flat cables on a PCB according to claim 1, characterized in that: The flat cable (3) is arranged in each of the PCB slots (21), and solder (23) is welded on the front and back of the connection between the flat cable (3) and the PCB slot (21).

5. The LCM for welding flat cables on a PCB according to claim 4, characterized in that: The front and back sides of the connection between the flat cable (3) and the semicircular metal via (22) are both adhered with single-sided adhesive tape (24).

6. The LCM for welding flat cables on a PCB according to claim 1, characterized in that: The body of the PCB slot (21) extends downward to the bottom of the front side of the PCB (2) body to form an outward opening, and the width of the body of the PCB slot (21) is 1.25 mm.

7. The LCM for welding flat cables on a PCB according to claim 1, characterized in that: The inner diameter and outer diameter of the semicircular metal via (22) are 1.0 mm and 1.5 mm respectively, and the semicircular metal via (22) is fixedly connected to the flat cable (3) located in the corresponding PCB slot (21).

8. The LCM for welding flat cables on a PCB according to claim 4, characterized in that: When soldering the solder (23), it is necessary to pay attention to soldering from both sides of the PCB (2) respectively, and the thickness of the flat cable (3) is smaller than the thickness of the PCB (2).

9. The LCM for welding flat cables on a PCB according to claim 5, characterized in that: The single-sided adhesive tape (24) covers all the solder (23) points on the PCB (2), and the edge of the bottom of the single-sided adhesive tape (24) is flush with the edge of the bottom of the PCB (2).

10. The LCM for welding flat cables on a PCB according to claim 1, characterized in that: The LCD (1) is fixed by two upper and lower rows of metal clamps on the front side of the PCB (2).

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