A structure that is convenient for viewing the TPACF golden ball area

Abstract

A structure for conveniently checking the TPACF gold ball area, comprising: a sensor, a silver paste layer is silk-screened on the sensor, a guide conductive film is arranged at one end of the sensor, an FPC is arranged at one end of the sensor, and the FPC includes three layers of FPC insulation PI; FPC insulation PI; FPC, the shape of the FPC matches the sensor PAD, and the width of the front is the same, while the length of the front of the FPC is 0.8mm longer than the length of the front of the sensor PAD. The utility model conveniently checks the structure of the TPACF gold ball area by expanding the silver paste layer from 0.2mm away from the edge of the sensor to 0.5mm, and at the same time matching the FPC design with the SENSOR binding PAD, making its width consistent and its length 0.8mm longer than the SENSOR PAD. Therefore, the design allows the inspection personnel to check from the side of the sensor whether the number of gold balls in the binding area meets the requirements, that is, to check whether the degree of cracking of the ACF gold balls meets the requirements to prevent affecting the conductive performance. Therefore, the design can achieve the purpose of convenient inspection by the staff.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a structure for conveniently viewing a TPACF gold ball area. Background Art

[0002] At present, the silver paste and FPC binding of TP sensors are designed in a one-to-one ratio. Therefore, after the binding is completed, the staff cannot check the condition of the ACF gold balls and whether they are good or not. They can only observe the condition of the ACF gold balls, the number of gold balls and the cracking conditions by tearing open the FPC. This wastes manpower and also wastes the test samples. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a structure for conveniently viewing the TPACF gold ball area.

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

[0005] A structure for conveniently viewing a TPACF gold ball area, comprising: a sensor, wherein a silver paste layer is silk-screened on the sensor, a guiding conductive film is arranged at one end of the sensor, an FPC is arranged at one end of the sensor, and the FPC comprises three layers of FPC insulating PI; FPC insulating PI, wherein two FPC copper layers are arranged in a central gap of the three layers of the FPC insulating PI; and FPC, wherein the shape of the FPC matches that of the sensor PAD, and the widths of the front sides are the same, while the length of the front side of the FPC is 0.8 mm longer than the length of the front side of the sensor PAD.

[0006] In one of the embodiments, the silver paste layer is screen-printed on a side of the sensor close to the FPC, and the edge of the covered surface of the silver paste layer is 0.5 mm away from the edge of the sensor.

[0007] In one embodiment, the guiding conductive film is disposed at the connection between the sensor and the FPC, and a gold ball area is disposed on the guiding conductive film.

[0008] In one embodiment, the gold ball area is located near the right side of the center of the connection between the guiding conductive film and the FPC.

[0009] In one embodiment, the three FPC insulating PIs are arranged with two intervals, and the two FPC copper layers are respectively arranged between the two intervals and are bonded to each other.

[0010] In one of the embodiments, the length of the FPC insulating PI that is interconnected with the guiding conductive film among the three FPC insulating PIs is shorter than the length of the other two FPC insulating PIs.

[0011] In one of the embodiments, an FPC copper area is provided on the FPC copper layer of the two FPC copper layers that is bonded to the guiding conductive film.

[0012] In one embodiment, the FPC is a flexible printed circuit board, and the size of the front side of the FPC is smaller than the size of the front side of the sensor.

[0013] In one embodiment, an IC is disposed on the FPC, and a dustproof film is disposed on the surface of the FPC.

[0014] In one embodiment, the front face of the sensor is square, and the four corners of the sensor are rounded.

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

[0016] The utility model facilitates checking the structure of the TPACF gold ball area by expanding the silver paste layer from 0.2mm away from the edge of the sensor to 0.5mm, and at the same time matching the FPC design with the SENSOR binding PAD to make them consistent in width and 0.8mm longer than the SENSORPAD so that it extends to the periphery of the SENSOR, thereby preventing the PI of the FPC from entering the binding area, causing a height difference and affecting the binding effect, and also preventing the FPC window from being flush with the edge of the SENSOR, resulting in high stress and easy breakage. Therefore, the design allows the inspection personnel to check from the side of the sensor whether the number of gold balls in the binding area meets the requirements, that is, to check whether the degree of breakage of the ACF gold balls meets the requirements to prevent affecting the conductive performance. Therefore, the design can achieve the purpose of convenient inspection for the staff. 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 A schematic diagram of the side stacking structure for convenient viewing of the structure of the TPACF gold ball area in the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the front side for convenient viewing of the structure of the TPACF gold ball area of ​​the utility model.

[0020] In the figure: 1, sensor; 11, silver paste layer; 12, guided conductive film; 13, gold ball area; 2, FPC; 21, FPC copper area; 22, FPC insulation PI; 23, FPC copper layer. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] like Figure 1-2As shown, a structure for conveniently viewing the TPACF gold ball area includes: sensor 1, a silver paste layer 11 is silk-screened on the sensor 1, a guide conductive film 12 is provided at one end of the sensor 1, and FPC2 is provided at one end of the sensor 1, and FPC2 includes three layers of FPC insulation PI22; FPC insulation PI22, and two FPC copper layers 23 are provided in the central gap of the three layers of FPC insulation PI22; FPC2, the shape of FPC2 matches the sensor 1 PAD, and the width of the front is the same, while the length of the front of FPC2 is 0.8mm longer than the length of the front of the sensor 1 PAD. It should be noted that FPC2 is set at the position near the lower right corner of the front of the sensor, and the connection between the sensor 1 and the silver paste layer 11 can be affixed with a layer of waterproof tape after the detection is completed.

[0026] like Figure 1-2 As shown, in one embodiment, the silver paste layer 11 is screen-printed on the side of the sensor 1 close to the FPC 2, and the edge of the silver paste layer 11 is 0.5 mm away from the edge of the sensor 1. It should be noted that the sensor 1 can not only be screen-printed with the silver paste layer 11 for conductivity, but can also be plated with metal molybdenum for conductivity, and the metal molybdenum, like the silver paste layer 11, has a coverage edge 0.5 mm away from the edge of the sensor 1.

[0027] like Figure 1-2 As shown, in one embodiment, the guide conductive film 12 is arranged at the connection between the sensor 1 and the FPC2, and a gold ball area 13 is arranged on the guide conductive film 12. The gold ball area 13 is located at the center of the connection between the guide conductive film 12 and the FPC2, close to the right side. It should be noted that this design, in conjunction with the shape of the FPC2 and the PAD on the sensor 1, can prevent the PI of the FPC2 from entering the binding area, causing a height difference and affecting the binding effect, while avoiding the problem that the FPC2 window is flush with the edge of the sensor 1, resulting in high stress and easy breakage.

[0028] like Figure 1-2 As shown, in one embodiment, three FPC insulation PIs 22 are arranged with two intervals, and two FPC copper layers 23 are arranged between the two intervals and adhered to each other. It should be noted that the two FPC copper layers 23 have the same length.

[0029] like Figure 1-2 As shown, in one embodiment, the length of the FPC insulation PI 22 interconnected with the guide conductive film 12 among the three FPC insulation PI 22 is shorter than the length of the other two FPC insulation PI 22. It should be noted that the length of the shorter FPC insulation PI 22 is 2 / 3 of the length of the other two FPC insulation PI 22.

[0030] like Figure 1-2As shown, in one embodiment, an FPC copper area 21 is provided on the FPC copper layer 23 of the two FPC copper layers 23 that is bonded to the guide conductive film 12. It should be noted that the FPC copper area 21 is used to facilitate observation by the staff, so the observation position of the FPC copper area 21 will be marked with a silk-screen frame.

[0031] like Figure 1-2 As shown, in one embodiment, FPC2 is a flexible circuit board, and the size of the front of FPC2 is smaller than the size of the front of sensor 1. IC is arranged on FPC2, and a dustproof film is arranged on the surface of FPC2. It should be noted that FPC2 can be folded to the back of sensor 1, so that FPC2 is hidden at the back of sensor 1.

[0032] like Figure 1-2 As shown, in one embodiment, the front of the sensor 1 is in a square shape, and the four corners of the sensor 1 are rounded. It should be noted that this design allows the sensor 1 to have just the right safety.

[0033] 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 conveniently viewing the TPACF gold ball area, characterized in that: include: A sensor (1), wherein a silver paste layer (11) is silk-screened on the sensor (1), a guiding conductive film (12) is arranged at one end of the sensor (1), an FPC (2) is arranged at one end of the sensor (1), and the FPC (2) comprises three layers of FPC insulating PI (22); FPC insulation PI (22), wherein two FPC copper layers (23) are arranged in the central gap of the three-layer FPC insulation PI (22); The FPC (2) has a shape that matches the sensor (1) PAD and has the same width on the front side, while the length of the front side of the FPC (2) is 0.8 mm longer than the length of the front side of the sensor (1) PAD.

2. The structure for conveniently viewing the TPACF gold ball area according to claim 1, characterized in that: The silver paste layer (11) is screen-printed on a side of the sensor (1) close to the FPC (2), and the edge of the covered surface of the silver paste layer (11) is 0.5 mm away from the edge of the sensor (1).

3. The structure for conveniently viewing the TPACF gold ball area according to claim 1, characterized in that: The guiding conductive film (12) is arranged at the connection point between the sensor (1) and the FPC (2), and a gold ball area (13) is arranged on the guiding conductive film (12).

4. The structure for conveniently viewing the TPACF gold ball area according to claim 3, characterized in that: The gold ball area (13) is located at a position close to the right side of the center of the connection between the guiding conductive film (12) and the FPC (2).

5. The structure for conveniently viewing the TPACF gold ball area according to claim 1, characterized in that: The three FPC insulating PIs (22) are arranged with two intervals, and the two FPC copper layers (23) are arranged between the two intervals respectively and are bonded to each other.

6. The structure for conveniently viewing the TPACF gold ball area according to claim 1, characterized in that: Among the three FPC insulating PIs (22), the length of the FPC insulating PI (22) connected to the guiding conductive film (12) is shorter than the lengths of the other two FPC insulating PIs (22).

7. The structure for conveniently viewing the TPACF gold ball area according to claim 1, characterized in that: An FPC copper area (21) is provided on the FPC copper layer (23) of the two FPC copper layers (23) that is bonded to the guide conductive film (12).

8. The structure for conveniently viewing the TPACF gold ball area according to claim 1, characterized in that: The FPC (2) is a flexible circuit board, and the size of the front side of the FPC (2) is smaller than the size of the front side of the sensor (1).

9. The structure for conveniently viewing the TPACF gold ball area according to claim 1, characterized in that: An IC is arranged on the FPC (2), and a dustproof film is arranged on the surface of the FPC (2).

10. The structure for conveniently viewing the TPACF gold ball area according to claim 1, characterized in that: The front face of the sensor (1) is in the shape of a square, and the four corners of the sensor (1) are rounded.

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