PAD structure for SolarCell FPC binding end
By designing several mirrored PADs and metal heat sinks at the bonding end of the Solar Cell FPC, the problem of poor bonding caused by excessively wide PADs was solved, resulting in more uniform force distribution and higher reliability of conductive connections.
Patent Information
- Application Number
- CN202423239916.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In existing Solar Cell products, the PAD width at the FPC bonding end is too large, resulting in uneven force during thermoforming bonding. This prevents the conductive gold ball from breaking, affecting the normal connection between the FPC and the Solar Cell glass, and causing poor bonding problems.
A PAD structure for the bonding end of a Solar Cell FPC is designed, employing several mirror-arranged positive and negative PADs to reduce the PAD width. A metal heat sink and a flexible circuit board are placed on top of the FPC to improve the uniformity of stress distribution.
By reducing the PAD bit width and improving stress uniformity, the probability of conductive gold ball breakage is increased, the problem of poor bonding is improved, and the normal connection between FPC and Solar Cell glass is ensured.
Smart Images

Figure CN223816267U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of FPC, especially to a PAD structure for the binding end of SOLARCELLFPC. BACKGROUND
[0002] At present, the FOG structure (i.e. FPC is bound to the Solar Cell glass) in the Solar Cell product, the FOG structure has a set of positive and negative window positions on the PV film layer of the Solar Cell, and such a design is prone to uneven force during hot-press binding due to the excessive width of the PAD position of the binding end, so that the conductive gold ball cannot be pressed to break, which can cause the FPC and the Solar Cell glass to fail to normally communicate and affect use, and this condition is called poor binding. SUMMARY
[0003] The utility model aims at overcoming the defects in the prior art and provides a PAD structure for the binding end of SOLARCELLFPC.
[0004] The utility model aims at overcoming the defects in the prior art and provides a PAD structure for the binding end of SOLARCELLFPC.
[0005] A PAD structure for the binding end of SOLARCELLFPC, comprising: a display screen and an FPC; a binding position is arranged at the bottom of the front of the display screen, and the FPC is arranged on the binding position; a plurality of positive PADs and negative PADs are arranged on the left and right sides of the top of the FPC, and the positive PADs and the negative PADs are bound by hot pressing between the binding position.
[0006] In one embodiment, the positive PADs and the negative PADs are mirror image arranged on the top of the FPC.
[0007] In one embodiment, the number of the positive PADs and the negative PADs is 3-4, and the number of the positive PADs and the negative PADs is the same.
[0008] In one embodiment, the front of the display screen is provided with a glass cover plate, and the shape and size of the front of the glass cover plate are the same as those of the front of the display screen.
[0009] In one embodiment, the length and width of the front of the binding position are adapted to the length and width of the front of the top block of the FPC.
[0010] In one embodiment, two metal heat dissipation pieces are arranged on the block on the left side of the bottom of the front of the FPC.
[0011] In one of the embodiments, the front of the metal heat-dissipating piece is semicircular, and the metal heat-dissipating piece is equidistantly arranged along the edge of the plate body on the right side of the bottom of the FPC.
[0012] In one of the embodiments, the FPC is a flexible printed circuit board, and the edges of the FPC are rounded.
[0013] In one of the embodiments, the central part of the back of the FPC is provided with electronic elements.
[0014] In one of the embodiments, the front of the display screen is provided with cross-positioning marks on the left and right sides of the binding position.
[0015] Compared with the prior art, the utility model has at least the following advantages:
[0016] The PAD structure of the utility model is aimed at the binding end of the SOLARCELL FPC, the original design of one PAD position is changed into three PAD positions or more, so that the PAD width of the binding position is greatly reduced compared with the original design, the stress is more uniform during hot-press binding, and the conductive gold ball is more easily broken, thereby greatly improving the binding failure problem of the SolarCell product binding FPC. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope, and for the ordinary skilled in the art, other related drawings can also be obtained according to these drawings without the creative labor.
[0018] Fig. 1 It is the front overall schematic view of the PAD structure of the utility model aimed at the binding end of the SolarCell FPC.
[0019] Fig. 2 It is the front overall schematic view of the PAD structure of the utility model aimed at the binding end of the SolarCell FPC.
[0020] In the drawing: 1, display screen; 11, glass cover plate; 12, binding position; 2, FPC; 21, positive PAD; 22, negative PAD; 23, metal heat-dissipating piece. DETAILED DESCRIPTION
[0021] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The preferred embodiments of the utility model are shown in the drawings. However, the utility model can be realized 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 utility model more thorough and comprehensive.
[0022] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0023] Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, can be fixedly connected, can also be detachably connected or integrated; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements.
[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing the specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0025] As Figs. 1-2 As shown in the figure, a PAD structure for the binding end of SolarCellFPC includes a display screen 1 and an FPC 2; the bottom of the front of the display screen 1 is provided with a binding position 12, and the FPC 2 is arranged on the binding position 12; a plurality of positive PADs 21 and negative PADs 22 are arranged on the left and right sides of the top of the FPC 2 respectively, and the positive PADs 21 and the negative PADs 22 are bound by hot pressing between the binding position 12. It should be noted that the length of the plurality of positive PADs 21 and negative PADs 22 combined together is the same as the length of the original single positive and negative.
[0026] As Figs. 1-2As shown, in one embodiment, the positive electrode PAD21 and the negative electrode PAD22 are arranged in a mirror image on the top of the FPC2. There are 3 to 4 positive electrode PAD21s and 4 negative electrode PAD22s, and the number of positive electrode PAD21s and negative electrode PAD22s is the same. It should be noted that the positive electrode PAD21s and negative electrode PAD22s are identical in size and shape.
[0027] like Figs. 1-2 As shown in one embodiment, a glass cover plate 11 is provided on the front of the display screen 1. The shape and size of the front of the glass cover plate 11 are the same as the shape and size of the front of the display screen 1. It should be noted that the shape of the display screen 1 can be circular or square, etc., and different designs are available according to customer needs.
[0028] like Figs. 1-2 As shown, in one embodiment, the length and width of the front side of the binding bit 12 are adapted to the length and width of the front side of the top block of FPC2.
[0029] like Figs. 1-2 As shown in one embodiment, two metal heat sinks 23 are provided on the bottom left side of the front of the FPC2. The front of the metal heat sink 23 is semi-circular, and the metal heat sinks 23 are equidistantly arranged along the bottom right edge of the FPC2. It should be noted that the metal heat sinks 23 can transfer heat from the FPC2 to the substrate to achieve heat dissipation.
[0030] like Figs. 1-2 As shown in one embodiment, FPC2 is a flexible circuit board, and all its sharp edges are rounded. Electronic components are located in the center of the back of FPC2. It should be noted that the length of the top of FPC2 is greater than the length of the central part, and its overall design is wider at the top and narrower in the middle.
[0031] like Figs. 1-2 As shown in one embodiment, a crosshair positioning mark is provided at the bottom front of the display screen 1 on both sides of the binding position 12. It should be noted that this design allows staff to quickly position the FPC2 and the display screen 1 when connecting them.
[0032] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A PAD structure for the bonding end of a SOLARCELL FPC, characterized in that, include: Display screen (1) and FPC (2); The bottom of the front of the display screen (1) is provided with a binding position (12), and the FPC (2) is disposed on the binding position (12); Several positive PADs (21) and negative PADs (22) are respectively provided on the left and right sides of the top of the FPC (2). The positive PADs (21) and negative PADs (22) are bonded to the binding position (12) by heat pressing.
2. The PAD structure for the bonding end of a SOLARCELL FPC according to claim 1, characterized in that, The positive electrode PAD (21) and the negative electrode PAD (22) are arranged in a mirror image on the top of the FPC (2).
3. The PAD structure for the bonding end of a SOLARCELL FPC according to claim 1, characterized in that, The number of positive electrode PADs (21) and negative electrode PADs (22) is 3 to 4, and the number of positive electrode PADs (21) and negative electrode PADs (22) is the same.
4. The PAD structure for the bonding end of a SOLARCELL FPC according to claim 1, characterized in that, The front of the display screen (1) is provided with a glass cover plate (11), and the shape and size of the front of the glass cover plate (11) are the same as the shape and size of the front of the display screen (1).
5. The PAD structure for the bonding end of a SOLARCELL FPC according to claim 1, characterized in that, The length and width of the front of the binding position (12) are adapted to the length and width of the front of the top block of the FPC (2).
6. The PAD structure for the bonding end of a SOLARCELL FPC according to claim 1, characterized in that, Two metal heat sinks (23) are provided on the bottom left side of the front of the FPC (2).
7. A PAD structure for the bonding end of a SOLARCELL FPC according to claim 6, characterized in that, The metal heat sink (23) has a semi-circular shape on the front and is equidistant from the edge of the plate on the right side of the bottom of the FPC (2).
8. The PAD structure for the bonding end of a SOLARCELL FPC according to claim 1, characterized in that, The FPC (2) is a flexible circuit board, and the sharp corners of its edges are all rounded.
9. A PAD structure for the bonding end of a SOLARCELL FPC according to claim 1, characterized in that, Electronic components are located in the center of the back of the FPC (2).
10. A PAD structure for the bonding end of a SOLARCELL FPC according to claim 1, characterized in that, A cross-shaped positioning mark is provided on the bottom front of the display screen (1) at the position on the left and right sides of the binding position (12).