Structure for detecting FPC insertion deviation

Abstract

The utility model discloses a structure for detecting FPC (Flexible Printed Circuit) insertion deviation, which comprises a display screen, an FPC is bound on the display screen, a golden finger area is arranged on the FPC, a PCB (Printed Circuit Board) is inserted into the end part of the golden finger area, a plurality of PINs are arranged on the golden finger area, the PINs positioned on the two outermost sides of the golden finger area are arranged in a U shape, a detector is arranged on the PCB, and the detector is connected with the FPC. The PINs located on the two outermost sides of the golden finger area are connected with the detector, and when the FPC is inserted obliquely, the detector stops supplying power to the display screen. According to the utility model, when the FPC is inserted in a deviated manner, the display screen cannot display normally, so that whether the FPC is inserted in a deviated manner can be rapidly detected.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC, in particular to a structure for detecting FPC insertion deviation. Background Art

[0002] FPC, or flexible printed circuit, is widely used in LCD display screens due to its advantages of light weight, thin thickness and easy bending. FPC provides the required power signal and color signal to LCD through plug-in connection with the connector on the motherboard, thereby driving LCD to display various wonderful images.

[0003] However, during the process of plugging the FPC into the connector, the FPC is often plugged crooked or the workers assemble it improperly, especially in the process of mass production. This will cause the FPC to have poor contact with the motherboard, and the LCD cannot display normally. In more serious cases, the power signal on the FPC is short-circuited with the system ground signal due to the misalignment of the plug, causing the LCD circuit to heat up and burn out due to high current, resulting in irreparable losses. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a structure for detecting FPC insertion deviation.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A structure for detecting misaligned insertion of an FPC comprises: a display screen, an FPC bound to the display screen, a gold finger area provided on the FPC, a PCB board plugged into the end of the gold finger area, a plurality of PIN pins provided on the gold finger area, the two outermost PIN pins located in the gold finger area are arranged in a U shape, a detector is provided on the PCB board, the two outermost PIN pins located in the gold finger area are connected to the detector, and when the FPC is misaligned, the detector stops supplying power to the display screen.

[0007] In one embodiment, the plurality of PIN pins on the gold finger area are distributed at equal distances along the length direction of the gold finger area, and the spacing between two adjacent PIN pins is 0.5 mm-0.8 mm.

[0008] In one embodiment, the end of the FPC away from the display screen is a plug-in end, the range of the gold finger area is larger than the range of the plug-in end, and the multiple PIN pins on the gold finger area are located in the area within the plug-in end and are correspondingly plugged into the PCB board.

[0009] In one embodiment, a connector is provided on the PCB board, and a plurality of connecting pins are provided on the connector for correspondingly plugging with the plurality of PIN pins.

[0010] In one embodiment, the two outermost PIN pins located in the gold finger area each include a main body and a bending portion, a bending position is provided between the main body and the bending portion, the bending portion is bent to the outside of the main body through the bending position, and the main body and the bending portion are connected in a U-shaped short circuit.

[0011] In one embodiment, the main body and the bent portion are arranged in parallel in the area inside the plug-in end, and both the main body and the bent portion can be plugged with the corresponding connecting pins on the connector.

[0012] In one embodiment, the length of the bent portion within the plug-in end is half of the length of the main body within the plug-in end.

[0013] In one embodiment, a cut angle is provided at the end of the bending portion, and the cut angle is inclined inward at an angle of 30 degrees.

[0014] In one embodiment, the detector is connected to the connecting pins corresponding to the two outermost PIN pins in the gold finger area in the connector. When the FPC is inserted crookedly, the two outermost PIN pins in the gold finger area are disconnected from the corresponding connecting pins, and the detector detects the abnormality and stops supplying power.

[0015] In one embodiment, the detector is a detection circuit, both ends of which are connected to the two outermost connecting pins on the connector, and the bent portions of the two outermost PIN feet in the gold finger area are correspondingly plugged into the two outermost connecting pins on the connector. When one of the bent portions is disconnected from the corresponding connecting pin, the detection circuit is disconnected and cannot supply power to the display screen.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The utility model discloses a structure for detecting the deviation of FPC insertion, by arranging the two outermost PIN pins of the gold finger area in a U-shape, and connecting the two outermost PIN pins with the detector on the connector of the PCB board; when the FPC is inserted crookedly to the connector of the PCB board, the two outermost PIN pins of the gold finger area will be separated from the corresponding connecting pins of the connector, while the other PIN pins are normally plugged in; at this time, the connection at the connecting pins corresponding to the two outermost PIN pins is abnormal, causing the detection circuit to detect the abnormal connection and cause power failure; the power supply in the detection circuit is turned off, and the display screen is not powered, and the display screen cannot display normally at this time, until the FPC is correctly plugged in, thereby achieving the effect of quickly detecting whether the FPC is inserted crookedly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 A schematic diagram of the structure of an FPC in a structure for detecting FPC insertion deviation provided by the utility model;

[0020] Figure 2 A schematic diagram of a structure in which an FPC is correctly plugged into a PCB board in a structure for detecting an FPC misalignment provided by the utility model;

[0021] Figure 3 The utility model provides a structure for detecting a structure for misaligned FPC insertion in which an FPC is inserted crookedly onto a PCB board.

[0022] Description of the drawings: 10, display screen; 20, FPC; 21, gold finger area; 211, PIN foot; 22, plug-in terminal; 30, PCB board; 31, connector; 311, connecting pin; 312, detection circuit; 40, main body; 50, bending part; 51, cutting corner; 60, bending position. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0024] A structure for detecting FPC insertion deviation, referring to Figure 1 , including a display screen 10, a FPC 20 is bound to the display screen 10, a gold finger area 21 is provided on the FPC 20, an end of the gold finger area 21 is connected to a PCB board 30, and the gold finger area 21 is plugged into the PCB board 30.

[0025] Reference Figure 1, a plurality of PIN pins 211 are arranged on the gold finger area 21, and the plurality of PIN pins 211 are equally spaced along the length direction of the gold finger area 21. The spacing between two adjacent PIN pins 211 is 0.5mm-0.8mm. The end of the FPC 20 away from the display screen 10 is the plug-in end 22, the range of the gold finger area 21 is larger than the range of the plug-in end 22, and the plurality of PIN pins 211 on the gold finger area 21 are located in the plug-in end 22 and are correspondingly plugged with the PCB board 30.

[0026] Reference Figure 1 The PCB board 30 is provided with a connector 31, and the connector 31 is provided with a plurality of connection pins 311 respectively corresponding to the plurality of PIN pins 211. The plurality of PIN pins 211 at the plug-in end 22 are correspondingly plugged with the plurality of connection pins 311 on the connector 31 to ensure the normal display function of the display screen 10. When the FPC 20 is inserted in an offset manner, the plurality of PIN pins 211 and the connection pins 311 are offset, and a short circuit is likely to occur, which may affect the normal operation of the display screen 10.

[0027] Reference Figure 1 The two outermost PIN pins 211 in the gold finger area 21 are arranged in a U-shape, and the two U-shaped PIN pins 211 are used to detect whether the FPC 20 is inserted skewly. The two outermost PIN pins 211 each include a body portion 40 and a bending portion 50, and a bending position 60 is arranged between the body portion 40 and the bending portion 50. The bending portion 50 is bent to the outside of the body portion 40 through the bending position 60, so that the outermost PIN pins 211 are arranged in a U-shape. The area where the body portion 40 and the bending portion 50 are located in the plug-in end 22 is arranged in parallel, and the body portion 40 and the bending portion 50 are connected in a U-shaped short circuit, and the body portion 40 and the bending portion 50 can be plugged with the corresponding connection pins 311 of the connector 31 on the PCB board 30.

[0028] Reference Figure 1 The length of the bent portion 50 in the plug-in end 22 is half the length of the main body 40 in the plug-in end 22, and a cut corner 51 is provided at the end of the bent portion 50, and the cut corner 51 is provided at an inward angle of 30 degrees. When the FPC 20 is inserted deviated, the two outermost PIN pins 211 in the gold finger area 21 will be separated from the corresponding connection pins 311 of the connector 31, forming a small area micro short circuit connection, reducing the short circuit when the FPC 20 is inserted deviated, and the other PIN pins 211 will not be separated from the corresponding connection pins 311 on the connector 31.

[0029] Reference Figure 2 and Figure 3A detector for detecting whether the FPC 20 is inserted crookedly is provided in the connector 31. The detector is connected to the connection pins 311 corresponding to the two outermost PIN pins 211 of the gold finger area 21 in the connector 31. When the FPC 20 is inserted crookedly onto the connector 31 of the PCB board 30, the two outermost PIN pins 211 of the gold finger area 21 cannot be connected normally with the corresponding connection pins 311. The detector detects the abnormality and stops supplying power.

[0030] Reference Figure 2 and Figure 3 , the detector is a detection circuit 312, the detection circuit 312 is connected to the two outermost connection pins 311 on the connector 31, and the bending parts 50 of the two outermost PIN pins 211 of the gold finger area 21 are correspondingly plugged with the two outermost connection pins 311 on the connector 31. When the FPC 20 is correctly plugged into the PCB board 30, the multiple PIN pins 211 of the gold finger area 21 are correspondingly plugged with the multiple connection pins 311, the multiple PIN pins 211 are connected to the detection circuit 312, the two outermost PIN pins 211 located in the gold finger area 21 are normally connected to the corresponding connection pins 311, and the detection circuit 312 is normal, so that the power supply in the detection circuit 312 can normally supply power to the display screen 10, and the display screen 10 can display normally. When the FPC 20 is inserted crookedly onto the connector 31 of the PCB board 30, any one of the two outermost PIN pins 211 located in the gold finger area 21 will be separated from the corresponding connecting pin 311 of the connector 31, while the other PIN pins 211 are normally plugged in. At this time, one of the bent portions 50 is not connected normally with the corresponding connecting pin 311, causing the detection circuit 312 to detect an abnormal connection and cause a power outage. The power supply in the detection circuit 312 is turned off, and the display screen 10 is not powered. The display screen 10 cannot display normally at this time until the FPC 20 is correctly plugged in.

[0031] 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. A structure for detecting FPC insertion deviation, characterized in that: include: A display screen (10), wherein an FPC (20) is bound to the display screen (10), a gold finger area (21) is provided on the FPC (20), a PCB board (30) is plugged into the end of the gold finger area (21), a plurality of PIN pins (211) are provided on the gold finger area (21), the two outermost PIN pins (211) of the gold finger area (21) are arranged in a U shape, a detector is provided on the PCB board (30), the two outermost PIN pins (211) of the gold finger area (21) are connected to the detector, and when the FPC (20) is inserted crookedly, the detector stops supplying power to the display screen (10).

2. A structure for detecting FPC insertion deviation according to claim 1, characterized in that: The plurality of PIN pins (211) on the gold finger area (21) are distributed at equal distances along the length direction of the gold finger area (21), and the spacing between two adjacent PIN pins (211) is 0.5 mm to 0.8 mm.

3. A structure for detecting FPC insertion deviation according to claim 2, characterized in that: One end of the FPC (20) away from the display screen (10) is a plug-in end (22); the range of the gold finger area (21) is larger than the range of the plug-in end (22); and the area of ​​the plurality of PIN pins (211) on the gold finger area (21) located within the plug-in end (22) is correspondingly plugged with the PCB board (30).

4. The structure for detecting FPC insertion deviation according to claim 3, characterized in that: The PCB board (30) is provided with a connector (31), and the connector (31) is provided with a plurality of connection pins (311) respectively used for correspondingly plugging with the plurality of PIN pins (211).

5. The structure for detecting FPC insertion deviation according to claim 4, characterized in that: The two outermost PIN pins (211) located in the gold finger area (21) each comprise a main body (40) and a bent portion (50), a bent position (60) being provided between the main body (40) and the bent portion (50), the bent portion (50) being bent to the outside of the main body (40) through the bent position (60), and the main body (40) and the bent portion (50) being connected in a U-shaped short circuit.

6. The structure for detecting FPC insertion deviation according to claim 5, characterized in that: The main body (40) and the bent portion (50) are arranged in parallel in an area inside the plug-in end (22); both the main body (40) and the bent portion (50) can be plugged into the corresponding connecting pins (311) on the connector (31).

7. The structure for detecting FPC insertion deviation according to claim 6, characterized in that: The length of the bent portion (50) within the plug-in end (22) is half the length of the main body portion (40) within the plug-in end (22).

8. The structure for detecting FPC insertion deviation according to claim 7, characterized in that: A cut corner (51) is provided at the end of the bending portion (50), and the cut corner (51) is arranged at an inwardly inclined angle of 30 degrees.

9. The structure for detecting FPC insertion deviation according to claim 8, characterized in that: The detector is connected to the connection pins (311) in the connector (31) and corresponding to the two outermost PIN pins (211) of the gold finger area (21); when the FPC (20) is inserted crookedly, the two outermost PIN pins (211) of the gold finger area (21) are disconnected from the corresponding connection pins (311), and the detector detects an abnormality and stops supplying power.

10. The structure for detecting FPC insertion deviation according to claim 9, characterized in that: The detector is a detection circuit (312), two ends of the detection circuit (312) are connected to the two outermost connecting pins (311) on the connector (31), the bent portions (50) of the two outermost PIN pins (211) of the gold finger area (21) are correspondingly plugged with the two outermost connecting pins (311) on the connector (31), and when one of the bent portions (50) is disconnected from the corresponding connecting pin (311), the detection circuit (312) is disconnected and cannot supply power to the display screen (10).

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