Printed circuit board with alignment mark points

Abstract

The utility model provides a printed circuit board with alignment mark points, which comprises an element layout area, a first element distribution forbidding area, a windowing area and a second element distribution forbidding area, the first element distribution forbidding area is positioned between the element layout area and the windowing area, and the second element distribution forbidding area is positioned between the first element distribution forbidding area and the second element distribution forbidding area. The second element distribution forbidding area is located on one side, deviating from the first element distribution forbidding area, of the windowing area; the windowing area is provided with a golden finger and an alignment mark group. According to the embodiment of the utility model, the occupation of the alignment mark points on the layout space of the element can be effectively reduced, the material cost is reduced, and the measuring points of the element area are prevented from being grabbed by mistake due to wrong identification, so that the risks of abnormal grabbing and shutdown are reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic circuit technical field especially relates to a printed circuit board with alignment mark point. BACKGROUND

[0002] In the modern electronic manufacturing field, the design and manufacture of printed circuit board (PCB) is the key link of electronic product research and production. The design of printed circuit board is not only related to the performance and reliability of electronic products, but also directly affects the cost and production efficiency of products. However, there are some problems to be solved in the existing technology in the design and manufacture of printed circuit board.

[0003] As described above, in the existing printed circuit board design, the position of alignment mark (mark) is usually located in the component layout area, which will occupy the valuable component layout space, affect the layout optimization of components, and increase the size of printed circuit board to adapt to the layout of all components, resulting in increased cost. Moreover, when the automatic equipment identifies and grabs the printed circuit board, it may misgrab the measuring point of the component area due to improper design of the position of the alignment mark, causing abnormal grabbing or even shutdown, and reducing the efficiency of the production line. SUMMARY

[0004] In order to improve at least part of the above shortcomings or deficiencies, the embodiments of the utility model provide a printed circuit board with alignment mark point, which can effectively reduce the occupation of component layout space by alignment mark point, avoid the need to increase the size of printed circuit board due to insufficient component layout space, thereby reducing material cost, preventing misgrabbing of measuring point of component area due to identification error, thereby reducing the risk of abnormal grabbing and shutdown, and improving production efficiency.

[0005] In one aspect, the utility model discloses a printed circuit board with alignment mark point, which comprises a component layout area, a first component forbidden area, a window area and a second component forbidden area, the first component forbidden area is located between the component layout area and the window area, and the second component forbidden area is located on the side of the window area away from the first component forbidden area; the window area is provided with a gold finger and an alignment mark group.

[0006] In some embodiments, the number of gold fingers is multiple, the multiple gold fingers are arranged at intervals along the length direction perpendicular to the width direction of the window area, and the interval between the adjacent two gold fingers forms an interval position, the alignment mark group is located in the interval position, and the width direction is from the first component forbidden area to the second component forbidden area.

[0007] In some embodiments, the number of alignment mark groups in any interval position is one or more.

[0008] In some embodiments, the alignment mark group comprises one or more alignment mark points.

[0009] In some embodiments, the alignment mark group comprises a plurality of alignment mark points, which are of the same shape or different shapes.

[0010] In some embodiments, the shape of the alignment mark point comprises a circle, a rectangle, a cross, an I shape or a triangle.

[0011] In some embodiments, the width of the windowed area in the direction from the first element forbidden area to the second element forbidden area ranges from 3mm to 10mm.

[0012] Another printed circuit board with alignment mark points provided by the embodiments of the present application comprises, for example, an element layout area, a windowed area and an element forbidden area separating the element layout area and the windowed area, the element layout area is used for arranging electronic elements, the windowed area is a window recessed in the printed circuit board, and the windowed area is provided with a plurality of alignment mark points and a plurality of conductive contact points.

[0013] In some embodiments, the window is a strip-shaped groove.

[0014] In some embodiments, the conductive contact point is a gold finger.

[0015] As can be seen from the above, the above technical features of the present application can have one or more of the following beneficial effects: the alignment mark group is arranged in the windowed area, which can effectively reduce the occupation of the element layout space, thereby avoiding affecting the layout optimization of the elements. In this way, more elements can be reasonably arranged in a limited space, the space utilization rate of the printed circuit board is improved, the size of the printed circuit board needs to be increased due to insufficient element layout space, thereby reducing the material cost. And it can ensure that the automatic equipment can identify the printed circuit board, prevent the measuring point of the element area from being grabbed due to identification error, thereby reducing the risk of abnormal grabbing and shutdown, and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 A top view of a printed circuit board with alignment mark points provided by the embodiments of the present application;

[0018] Figure 2 Another top view of the printed circuit board with alignment mark points provided by the utility model embodiment;

[0019] Figure 3 Another top view of the printed circuit board with alignment mark points provided by the utility model embodiment;

[0020] Figure 4 Another top view of the printed circuit board with alignment mark points provided by the utility model embodiment;

[0021] Figure 5 Another top view of the printed circuit board with alignment mark points provided by the utility model embodiment;

[0022] Figure 6 Another top view of the printed circuit board with alignment mark points provided by the utility model embodiment.

[0023] Reference signs:

[0024] 10, component layout area; 20, first component forbidden area; 30, window area; 310, golden finger; 320, interval position; 40, alignment mark group; 410, alignment mark point; 50, second component forbidden area. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Reference is made to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The utility model embodiment provides a kind of printed circuit board with alignment mark points, and printed circuit board includes component layout area 10, first component forbidden area 20, window area 30 and second component forbidden area 50.First component forbidden area 20 is located between component layout area 10 and window area 30, and second component forbidden area 50 is located in the side of window area 30 away from first component forbidden area 20;Window area 30 is provided with golden finger 310 and alignment mark group 40.

[0027] Specifically, the alignment mark group 40 is arranged in the windowing area 30, which can ensure that the automated equipment can more accurately capture the alignment mark point 410 when identifying the printed circuit board, reducing the problem of measuring points of mis-grabbed component areas caused by identification errors, thereby reducing the risk of grabbing abnormalities and downtime, and improving production efficiency. Moreover, arranging the alignment mark group 40 in the windowing area 30 instead of the component layout area 10 can effectively reduce the occupation of the component layout space, thereby avoiding affecting the layout optimization of the components. In this way, more components can be reasonably arranged in a limited space, improving the space utilization rate of the printed circuit board, and avoiding the need to increase the size of the printed circuit board due to insufficient component layout space, thereby reducing material costs. The gold finger 310 is arranged in the windowing area 30, and the gold finger 310 serves as a conductive contact point, which can be a strip-shaped conductive metal structure. The first component forbidden area 20 and the second component forbidden area 50 are arranged on both sides of the windowing area 30, which can protect the gold finger 310 and ensure the safety and reliability of the electrical connection.

[0028] The component layout area 10 is the placement area of electronic components (such as active components such as diodes and triodes, and / or passive components such as capacitors and resistors) on the printed circuit board. The first component forbidden area 20 and the second component forbidden area 50 are prohibited placement areas of electronic components on the printed circuit board. The windowing area 30 is a hole of a certain size and shape, such as a strip-shaped groove, which is opened on the surface of the printed circuit board to facilitate the welding connection of external components (such as connectors and chips) with the printed circuit board. Different sizes and shapes of windows can be created on the printed circuit board to meet the needs of various components. The alignment mark group 40 provides a common measurable point for each step in the manufacturing and assembly process of the printed circuit board, ensuring that each device used in assembly can accurately locate the circuit pattern for precision. During the use of automated equipment such as a placement machine and automatic optical inspection (AOI), the alignment mark group 40 helps the machine accurately identify and locate the printed circuit board, thereby ensuring that components can be accurately placed in the predetermined position. During the assembly process of the printed circuit board, the alignment mark group 40 ensures the correct alignment of the printed circuit board with other components, which can ensure accuracy and assembly quality, and prevent misalignment.

[0029] Referring to Figure 1 In some embodiments, the number of gold fingers 310 is multiple, and the multiple gold fingers 310 are arranged in a length direction perpendicular to the width direction of the windowing area 30, and the alignment mark group 40 is located in the interval 320 between the adjacent two gold fingers 310. The width direction is from the first component forbidden area 20 to the second component forbidden area 50. Figure 1The direction represented by the middle arrow is perpendicular to the width direction and the length direction. The gold fingers 310 serve as conductive contact points at the edge of the printed circuit board, providing reliable electrical connection and signal transmission, ensuring the stability and reliability of signal transmission. The alignment mark group 40 is arranged in the interval position 320, which can provide accurate reference points for automated equipment, ensuring the alignment accuracy when the gold fingers 310 are connected to other components, reducing connection problems caused by inaccurate alignment. It also maximizes the use of printed circuit board space, reduces space waste, improves the utilization rate of printed circuit boards, reduces the overall production cost, and improves the product yield, reduces waste and rework caused by inaccurate alignment, thereby improving economic benefits.

[0030] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 6 , in some embodiments, the number of alignment mark groups 40 in any interval position 320 is one or more. According to different application requirements, one or more alignment mark groups 40 can be flexibly arranged in the interval position 320 to adapt to different alignment requirements and accuracy standards, enhancing the adaptability and flexibility of the design. For example, Figure 3 and Figure 6 , multiple alignment mark groups 40 can be arranged in the interval position 320 to help disperse and reduce error accumulation. When a certain alignment mark group 40 cannot be recognized due to contamination or other reasons, other alignment mark groups 40 can still ensure the accuracy of alignment, improving the reliability and stability of the entire system. If one alignment mark group 40 cannot be recognized due to contamination, damage or other reasons, other alignment mark groups 40 can still provide positioning to ensure the normal progress of subsequent work.

[0031] Referring again to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 , in some embodiments, the alignment mark group 40 includes one or more alignment mark points 410. The alignment mark point 410 provides more accurate spatial positioning information to help automated equipment accurately identify the position and direction of the printed circuit board. For example, in a certain interval position 320, the number of alignment mark groups 40 is multiple, and the number of alignment mark points 410 in the alignment mark group 40 is one, as shown in Figure 3 ; in a certain interval position 320, the number of alignment mark groups 40 is multiple, and the number of alignment mark points 410 in the alignment mark group 40 is multiple, as shown in Figure 6 ; in a certain interval position 320, the number of alignment mark groups 40 is one, and the number of alignment mark points 410 in the alignment mark group 40 is multiple, as shown in Figure 4 or Figure 5As shown; in a certain interval position 320, for example, the number of alignment mark groups 40 is one, and the number of alignment mark points 410 in the alignment mark group 40 is one, for example. Figure 1 Or Figure 2 As shown.

[0032] Referring to Figure 4 , Figure 5 and Figure 6 , in some embodiments, the alignment mark group 40 includes a plurality of alignment mark points 410, and the shapes of the plurality of alignment mark points 410 are the same or different. The alignment mark points 410 of the same shape can reduce errors caused by shape differences, i.e. reduce recognition errors. The alignment mark points 410 of different shapes can provide more specificity, which helps to distinguish different areas or functions in a complex printed circuit board layout.

[0033] In some embodiments, the shape of the alignment mark point 410 includes a circle, a rectangle, a cross, an I shape or a triangle. Among them, the shape of the alignment mark point 410 is, for example, a circle, which is easy to identify and align, and is suitable for applications that require high-precision alignment. The shape of the alignment mark point 410 is, for example, a cross, which can provide accurate center point positioning. The shape of the alignment mark point 410 can meet different alignment needs, improve the recognition ability of automated equipment, and optimize the production and design process of printed circuit boards. The shape of the alignment mark point 410 also includes, for example, a rhombus, an oval, etc.

[0034] Specifically, when the alignment mark group 40 contains a plurality of alignment mark points 410, the shapes of the plurality of alignment mark points 410 can be the same or different; for example, there are two alignment mark points 410 in one alignment mark group 40, and the shapes of the two alignment mark points 410 are both circles, or there are three alignment mark points 410 in one alignment mark group 40, and the shapes of the three alignment mark points 410 are, for example, a circle, a rectangle and a triangle, respectively.

[0035] Referring to Figure 1In some embodiments, the width of the windowing region 30 in the direction from the first element keep-out region 20 to the second element keep-out region 50 ranges from 3mm to 10mm, i.e. the diameter of the alignment mark 410 ranges from 3mm to 10mm when the alignment mark 410 is circular, or the height of the alignment mark 410 ranges from 3mm to 10mm when the alignment mark 410 is rectangular, triangular or cross-shaped. The width of the gold finger 310 in the direction from the first element keep-out region 20 to the second element keep-out region 50 ranges from 2mm to 9mm, the distance between the gold finger 310 and the first element keep-out region 20 is 0.5mm, and the distance between the gold finger 310 and the second element keep-out region 50 is 0.5mm, so as to avoid the size of the windowing region 30 being too large and increasing the size of the printed circuit board, thereby reducing the cost. The direction from the first element keep-out region 20 to the second element keep-out region 50 is the width direction of the printed circuit board.

[0036] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The printed circuit board of the embodiments of the present application can also be described as follows: a printed circuit board with an alignment mark, comprising an element layout region 10, a windowing region 30 and an element keep-out region spacing the element layout region 10 and the windowing region 30, the element layout region 10 is used for arranging electronic elements, and the windowing region 30 is a window such as a strip-shaped groove recessed in the printed circuit board; the windowing region 30 is provided with a plurality of (for example, one or more) alignment marks 410 and a plurality of conductive contact points such as gold fingers. The element keep-out region comprises a first element keep-out region 20 and a second element keep-out region 50, the first element keep-out region 20 is located between the element layout region 10 and the windowing region 30, and the second element keep-out region 50 is located on the side of the windowing region 30 away from the first element keep-out region 20.

[0037] It should be noted that the terms "first", "second", and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the terms thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0038] In addition, it can be understood that the foregoing various embodiments are only exemplary descriptions of the present application, and on the premise that the technical features do not conflict, the structure is not contradictory, and does not deviate from the purpose of the present application, the technical solutions of each embodiment can be arbitrarily combined and used.

[0039] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present application.

Claims

1. A printed circuit board having alignment mark points, characterized by, The printed circuit board comprises an element layout area, a first element forbidden layout area, a windowed area and a second element forbidden layout area, the first element forbidden layout area is located between the element layout area and the windowed area, and the second element forbidden layout area is located on the side of the windowed area away from the first element forbidden layout area; the windowed area is provided with a gold finger and a positioning mark group.

2. The printed circuit board having alignment mark points according to claim 1, wherein, The number of the gold fingers is multiple, the multiple gold fingers are arranged at intervals along the length direction perpendicular to the width direction of the windowed area, a spacing position is formed between adjacent two gold fingers, the positioning mark group is located in the spacing position, and the width direction is from the first element forbidden layout area to the second element forbidden layout area.

3. The printed circuit board having alignment mark points as recited in claim 2, wherein, The number of the positioning mark group in any spacing position is one or more.

4. The printed circuit board having alignment mark points according to claim 1, wherein, The positioning mark group comprises one or more positioning mark points.

5. The printed circuit board having alignment mark points as recited in claim 1, wherein, The positioning mark group comprises multiple positioning mark points, and the shapes of the multiple positioning mark points are the same or different.

6. The printed circuit board having alignment mark points according to claim 4 or 5, wherein, The shape of the positioning mark point comprises a circle, a rectangle, a cross, an I shape or a triangle.

7. The printed circuit board having alignment mark points according to claim 1, wherein, The width range of the windowed area in the direction from the first element forbidden layout area to the second element forbidden layout area is 3-10 mm.

8. A printed circuit board having alignment mark points, characterized by, The printed circuit board comprises an element layout area, a windowed area and an element forbidden layout area for spacing the element layout area from the windowed area, the element layout area is used for arranging electronic elements, the windowed area is a window recessed in the printed circuit board, and the windowed area is provided with a plurality of positioning mark points and a plurality of conductive contact points.

9. The printed circuit board having alignment mark points according to claim 8, wherein, The window is a strip-shaped groove.

10. The printed circuit board having alignment mark points according to claim 8 or 9, wherein, The conductive contact point is a gold finger.

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