Pin structure of backlight FPC

Abstract

The utility model relates to the technical field of backlight FPCs (Flexible Printed Circuit), in particular to a pin structure of a backlight FPC. The connecting piece comprises a plurality of connecting parts; wherein the connecting parts are not in contact with each other; a plurality of pins are arranged on each connecting part; the pins with the same function are positioned on the same connecting part; sequentially numbering the connecting parts from left to right; wherein the odd-numbered connecting parts are welded to the front face of the main screen FPC through solder paste, and the even-numbered connecting parts are welded to the back face of the main screen FPC through solder paste. Or, the connection parts of the odd number are welded to the back face of the main screen FPC through the solder paste, and the connection parts of the even number are welded to the front face of the main screen FPC through the solder paste. According to the utility model, through arranging the U-shaped groove, pins with different functions, such as LED A, LED K, NTC and the like, are completely isolated. In addition, due to the design of the U-shaped groove, a part of the connecting part can be bent to the back of the main screen FPC, so that the connecting part is welded and fixed with a pin on the back, and the phenomena of short circuit caused by contact and backlight module breakdown caused by large current are further avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to backlight FPC technical field, especially a pin structure of backlight FPC. BACKGROUND

[0002] In the interface of the backlight product of the traditional LCM, between LEDA and LEDK, between LEDA or LEDK and NTC, it is required to increase NC pin, the purpose is to prevent short circuit due to misplacement or too much soldering tin during soldering, causing large current and burning the backlight. Figure 1 As shown in the figure, the traditional pin structure is NTC2 pin, NTC1 pin, NC pin, LEDK2 pin, LEDK1 pin, NC pin, LEDA pin and LEDA pin from No. 1 to No. 8 respectively; the soldering effect diagram of the backlight FPC and the main screen FPC is as shown in Figure 2 ; as shown in Figure 3 , it is the cross section view of the soldering part; as can be seen from the above figure, under the condition of misplacement of the pin or too much soldering tin, short circuit between the pins is easily caused, leading to burning of the backlight module; therefore, how to design a pin structure to avoid short circuit becomes a technical problem to be solved urgently. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at the problems existing in the background art, and provides a pin structure of backlight FPC; by increasing U groove design at the backlight pad position, LEDA, LEDK and NTC are isolated, short circuit and large current breakdown of the backlight module are prevented.

[0004] The technical scheme of the utility model provides a pin structure of backlight FPC, comprising a plurality of connecting parts; wherein the connecting parts are not in contact with each other;

[0005] A plurality of pins are arranged on each connecting part; pins with the same function are located on the same connecting part;

[0006] The connecting parts are numbered from left to right in sequence; wherein the connecting parts of odd items are soldered on the front surface of the main screen FPC through tin paste, and the connecting parts of even items are soldered on the back surface of the main screen FPC through tin paste;

[0007] Or,

[0008] The connecting parts of odd items are soldered on the back surface of the main screen FPC through tin paste, and the connecting parts of even items are soldered on the front surface of the main screen FPC through tin paste.

[0009] Preferably, the connecting part comprises a first connecting part, a second connecting part and a third connecting part;

[0010] A U-shaped groove is arranged between the first connecting part and the second connecting part; the same U-shaped groove is arranged between the second connecting part and the third connecting part.

[0011] Preferably, the first connecting part and the second connecting part are not in contact with each other; and the second connecting part and the third connecting part are not in contact with each other.

[0012] Preferably, the first connecting part, the second connecting part and the third connecting part are all welded on the corresponding pins of the main screen FPC through tin paste.

[0013] Preferably, the first connecting part and the third connecting part are located on the front surface of the main screen FPC, and the second connecting part is located on the back surface of the main screen FPC.

[0014] Preferably, the first connecting part and the third connecting part are located on the back surface of the main screen FPC, and the second connecting part is located on the front surface of the main screen FPC.

[0015] Preferably, the first connecting part comprises an NTC2 pin and an NTC1 pin.

[0016] Preferably, the second connecting part comprises an LEDK2 pin and an LEDK1 pin.

[0017] Preferably, the third connecting part comprises two LEDA pins.

[0018] Preferably, the connecting part on the back surface of the main screen FPC is pre-bent at a certain angle to be connected with the pin on the back surface of the main screen FPC.

[0019] Compared with the prior art, the utility model has the advantages of the following beneficial technical effects:

[0020] The utility model discloses a U-shaped groove is set up to the pin of LEDA, LEDK, NTC and the like different function is completely isolated in addition. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of FPC pin in prior art;

[0022] Figure 2 It is the effect picture of FPC pin and main screen FPC welding in prior art;

[0023] Figure 3 It is the cross -section view of FPC pin and main screen FPC welding in prior art;

[0024] Figure 4 It is the structure schematic diagram of FPC pin of the utility model embodiment improvement;

[0025] Figure 5This is a rendering of the improved FPC pins and the main screen FPC being welded together in accordance with the embodiment of the present utility model;

[0026] Figure 6 This is a cross-sectional view of the improved FPC pins and the main screen FPC being welded together in an embodiment of the present utility model;

[0027] Figure 7 This is a three-dimensional simulation diagram of the improved FPC pins according to the embodiment of the utility model;

[0028] Figure 8 This is a cross-sectional simulation diagram of the improved FPC pin according to an embodiment of the present utility model.

[0029] Figure numerals: 1, first connecting portion; 2, second connecting portion; 3, third connecting portion; 4, solder paste; 5, U-shaped groove. DETAILED DESCRIPTION

[0030] The utility model provides a pin structure of a backlight FPC, comprising a plurality of connecting parts, wherein the connecting parts do not contact each other;

[0031] Each connection part is provided with a number of pins; pins with the same function are located on the same connection part;

[0032] The connections are numbered from left to right; the odd-numbered connections are soldered to the front of the main screen FPC using solder paste 4, and the even-numbered connections are soldered to the back of the main screen FPC using solder paste 4;

[0033] or,

[0034] The connection parts of the odd-numbered items are soldered to the back of the main screen FPC through solder paste 4, and the connection parts of the even-numbered items are soldered to the front of the main screen FPC through solder paste 4.

[0035] Example 1

[0036] like Figure 4 As shown, the connection part includes a first connection part 1, a second connection part 2 and a third connection part 3;

[0037] A U-shaped groove 5 is provided between the first connecting portion 1 and the second connecting portion 2; a similar U-shaped groove 5 is provided between the second connecting portion 2 and the third connecting portion 3. Due to the provision of the U-shaped groove 5, the first connecting portion 1 and the second connecting portion 2 do not contact each other; and the second connecting portion 2 and the third connecting portion 3 do not contact each other.

[0038] In this embodiment, the first connecting portion 1 , the second connecting portion 2 , and the third connecting portion 3 are all soldered to corresponding pins of the main screen FPC through solder paste 4 .

[0039] like Figure 5As shown in the figure, the first connecting part 1 and the third connecting part 3 are located on the front surface of the main screen FPC, and the second connecting part 2 is located on the back surface of the main screen FPC. The first connecting part 1 comprises NTC2 pin and NTC1 pin, the second connecting part 2 comprises LEDK2 pin and LEDK1 pin, and the third connecting part 3 comprises two LEDA pins.

[0040] In the embodiment, the connecting part on the back surface of the main screen FPC is pre-bent at an angle to connect with the pins on the back surface of the main screen FPC. Figure 6 As shown in the figure, the pins of different functions such as LEDA, LEDK and NTC are completely isolated, and a part of the connecting part is connected with the front surface of the main screen FPC, and another part is connected with the back surface of the main screen FPC, which effectively prevents short circuit between different pins and large current breakdown of the backlight module.

[0041] Embodiment 2

[0042] As shown in the figure, the connecting part comprises a first connecting part 1, a second connecting part 2 and a third connecting part 3. Figure 4

[0043] The U-shaped groove 5 is arranged between the first connecting part 1 and the second connecting part 2, and the same U-shaped groove 5 is arranged between the second connecting part 2 and the third connecting part 3. Due to the arrangement of the U-shaped groove 5, the first connecting part 1 and the second connecting part 2 are not in contact with each other, and the second connecting part 2 and the third connecting part 3 are not in contact with each other.

[0044] In the embodiment, the first connecting part 1, the second connecting part 2 and the third connecting part 3 are all welded on the corresponding pins of the main screen FPC through the tin paste 4.

[0045] Different from the embodiment 1, the first connecting part 1 and the third connecting part 3 are located on the back surface of the main screen FPC, and the second connecting part 2 is located on the front surface of the main screen FPC. The first connecting part 1 comprises NTC2 pin and NTC1 pin, the second connecting part 2 comprises LEDK2 pin and LEDK1 pin, and the third connecting part 3 comprises two LEDA pins.

[0046] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range of the persons skilled in the art without departing from the purpose of the utility model.​

Claims

1. A pin structure of a backlight FPC, characterized in that: comprising a plurality of connecting parts, wherein the connecting parts do not contact each other; Each connection part is provided with a number of pins; pins with the same function are located on the same connection part; The connection parts are numbered from left to right; the connection parts of the odd-numbered items are soldered to the front of the main screen FPC through solder paste (4), and the connection parts of the even-numbered items are soldered to the back of the main screen FPC through solder paste (4); or, The connection parts of the odd-numbered items are soldered to the back of the main screen FPC through solder paste (4), and the connection parts of the even-numbered items are soldered to the front of the main screen FPC through solder paste (4).

2. The pin structure of a backlight FPC according to claim 1, characterized in that: The connecting portion comprises a first connecting portion (1), a second connecting portion (2) and a third connecting portion (3); A U-shaped groove (5) is provided between the first connecting portion (1) and the second connecting portion (2); and a similar U-shaped groove (5) is provided between the second connecting portion (2) and the third connecting portion (3).

3. The pin structure of a backlight FPC according to claim 2, characterized in that: The first connecting portion (1) and the second connecting portion (2) do not contact each other; the second connecting portion (2) and the third connecting portion (3) do not contact each other.

4. The pin structure of a backlight FPC according to claim 2, characterized in that: The first connecting portion (1), the second connecting portion (2) and the third connecting portion (3) are all soldered to corresponding pins of the main screen FPC via solder paste (4).

5. The pin structure of a backlight FPC according to claim 4, characterized in that: The first connecting portion (1) and the third connecting portion (3) are located on the front side of the main screen FPC, and the second connecting portion (2) is located on the back side of the main screen FPC.

6. The pin structure of a backlight FPC according to claim 4, characterized in that: The first connecting portion (1) and the third connecting portion (3) are located on the back side of the main screen FPC, and the second connecting portion (2) is located on the front side of the main screen FPC.

7. The pin structure of a backlight FPC according to claim 2, characterized in that: The first connecting portion (1) includes an NTC2 pin and an NTC1 pin.

8. The pin structure of a backlight FPC according to claim 2, characterized in that: The second connecting portion (2) includes an LEDK2 pin and an LEDK1 pin.

9. The pin structure of a backlight FPC according to claim 2, characterized in that: The third connecting portion (3) includes two LEDA pins.

10. The pin structure of a backlight FPC according to claim 1, characterized in that: The connection part with the back of the main screen FPC is pre-bent at a certain angle so that it is connected to the pins on the back of the main screen FPC.

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