TWM633833U - Flexible circuit board with punching recognition pattern - Google Patents

Abstract

A flexible printed circuit board with a punching hole identification pattern is used to solve the problem that the conventional flexible printed circuit board has a low degree of recognition of the punched holes, which causes the machine to misjudge the quality of the product. It includes: a substrate; a circuit part located on the surface of the substrate, a cutting line surrounding the effective circuit area of the circuit part; and an identification pattern located on the surface of the substrate, the identification pattern is close to the circuit part and located In the area other than the line, if the line portion has a defect, a punching hole is punched on the substrate, and the punching hole covers a part of the line portion and the identification pattern.

Description

Flexible circuit board with punched hole identification pattern

The invention relates to a substrate for mounting electronic components, in particular to a flexible circuit board with a punching identification pattern for a machine to correctly identify punching holes.

Please refer to Figure 1, it is a known flexible circuit board 9, several flexible circuit boards 9 are sequentially processed and formed on a flexible substrate, and each flexible circuit board 9 is composed of a large number of electronic circuits Arranged and distributed to form a circuit area 91, the circuit area 91 of the several flexible circuit boards 9 must pass a series of automated tests, such as: automatic optical inspection (Automated Optical Inspection, AOI), circuit electrical test (In-Circuit- Test, ICT) and Function Verification Test (Function Verification Test, FVT) and other quality management processes to screen out possible hidden appearance defects or electrical defects in each line area 91, and after automated quality control inspection, it is judged to be Defective flexible circuit boards 9 will be stamped with an identification hole 92 on the flexible circuit board 9 by the machine to mark them as scrapped, which can avoid soldering electronic components on the defective flexible circuit board 9 or even assembling them into products. And cause waste of assembly man-hours and material loss.

The above-mentioned conventional flexible circuit board 9, after automatic production and inspection, is a whole roll of circuit boards with good products and defective products, which are cut, shipped and assembled by roll-to-roll film transportation (Roll-to-Roll) At the same time, the image sensor is used to automatically screen and skip the defective products with the identification holes 92. It can be operated continuously to save process time, and by calculating the number of identification holes 92, it is also possible to count whether the production yield is up to standard. However, It is known that when the substrate of the flexible circuit board 9 is made of thin and transparent materials, the identification hole 92 punched on the flexible circuit board 9 can transmit light as well as the surrounding transparent substrate, which makes it difficult for the image sensor to distinguish the identification. Holes 92 and transparent substrates increase the probability of misjudgment. In this way, good circuit boards may be mistaken for having the identification holes 92 by automated machines and be rejected, resulting in a decrease in the overall yield of circuit boards; otherwise, bad circuit boards may not be found. The identification hole can be packaged and shipped, causing products with abnormal quality and function to flow into the market, affecting the safety of electrical appliances and reducing the goodwill of the manufacturer.

In view of this, the conventional flexible circuit board still needs to be improved.

In order to solve the above problems, the purpose of this creation is to provide a flexible circuit board with a punching identification pattern, which can accurately identify the punching holes on the circuit board.

The second purpose of this creation is to provide a flexible printed circuit board with a punched hole identification pattern, which can save the time for quality control testing of the printed circuit board.

Another purpose of this creation is to provide a flexible printed circuit board with a punched identification pattern, which can prevent bad products from entering the market.

The directionality or similar terms mentioned in the full text of this work, such as "upper (top)", "lower (bottom)", "inner", "outer", "side", etc., mainly refer to the directions of the attached drawings, each Direction or similar terms are only used to assist in explaining and understanding the various embodiments of the creation, not to limit the creation.

The use of the quantifiers "one" or "one" in the elements and components described throughout this creation is only for convenience and to provide the usual meaning of the scope of this creation; it should be interpreted in this creation as including one or at least one, and a single The notion of also includes the plural unless it is obvious that it means otherwise.

The flexible printed circuit board with punching hole identification pattern of the present creation includes: a substrate; a circuit part located on the surface of the substrate, a cutting line surrounding the effective circuit area of the circuit part; and an identification pattern located on the surface of the substrate , the identification pattern is close to the line part and is located outside the cutting line. If the line part has a defect, a punching hole is punched on the substrate, and the scope of the punching hole covers part of the line part area and the identification pattern. pattern.

Accordingly, the flexible circuit board with a punched hole identification pattern of the present invention can make the image sensing system detect whether the identification pattern is detected by forming the identification pattern within the range of the punched hole used to mark the scrapped circuit board. , to determine whether the flexible circuit board is a good product or a defective product. If the identification pattern is detected, it means that the function of the flexible circuit board is normal. If the identification pattern is not detected, it means that the flexible circuit board has been punched with the punching hole. Scrapping can improve the accuracy of automatic identification, save process time, and prevent defective products from being shipped.

Wherein, the material of the substrate is polyethylene terephthalate or polyimide. In this way, the substrate can be light-transmitting, electrically insulated, impact-resistant, and has the characteristics of light weight and bendability, and has the effect of applying flexible circuit boards to various electronic products.

Wherein, the circuit part includes several closely arranged metal wires, and the identification pattern and the several metal wires are made of the same material and formed by the same manufacturing process. In this way, the image sensing system for detecting the metal wire pattern can detect the recognition pattern synchronously without adjusting the image sensing parameters, which has the effects of saving test time and improving recognition accuracy.

In order to make the above and other purposes, features and advantages of this creation more obvious and easy to understand, the preferred embodiments of this creation are specially cited below, and explained in detail with the accompanying drawings; in addition, the same symbols are marked in different drawings are considered the same, and their descriptions will be omitted.

Please refer to Fig. 2, which is a preferred embodiment of the flexible printed circuit board with a punching identification pattern in this invention, which includes a substrate 1, a circuit part 2 and an identification pattern 3, the circuit part 2 and the identification pattern The pattern 3 is located on the surface of the same side of the substrate 1 , the identification pattern 3 is close to the circuit portion 2 , and the identification pattern 3 does not overlap the circuit portion 2 .

The substrate 1 is a strip-shaped carrier board that is flexible and can be rolled up. The substrate 1 can be gradually unfolded through the roller transport, and sequentially processed on the surface of the substrate 1 to form several conductive circuits of circuit boards. Disk and electronic components and other structures, the material of the substrate 1 can be polyethylene terephthalate (Polyethylene Terephthalate, PET) or polyimide (Polyimide, PI) and other polymers, which are transparent, electrically insulating, resistant Impact, light weight and toughness, the manufactured circuit boards can be applied to displays, foldable or wearable lightweight electronic products.

The circuit part 2 includes several closely arranged metal wires, which are formed on the surface of the substrate 1 through processes such as exposure, corrosion and electroplating, and a cutting line C surrounds most of the circuit part 2 Cutting the substrate 1 along the cutting line C can retain the effective circuit area formed by the arrangement of the several metal wires, and the area of the substrate 1 outside the cutting line C, together with the transmission holes, alignment marks, Cut and exclude areas without circuit functions such as support blocks and terminal lines.

Please refer to Figures 2 and 3, the identification pattern 3 is located outside the cutting line C, the identification pattern 3 is formed of an opaque material, and the identification pattern 3 can be the same as the plurality of metal wires. The manufacturing process is formed on the surface of the substrate 1 together, so the identification pattern 3 and the plurality of metal wires are made of the same metal conductive material, so that the image sensing system used to detect the circuit portion 2 can also detect the identification pattern 3 . As shown in Figure 2, after the circuit part 2 has passed the appearance, electrical and functional tests, the recognizable identification pattern 3 can be seen next to the circuit part 2, which means that the circuit part 2 can be cut in the next step. In the packaging process, it is divided into circuit board products; in addition, as shown in Figure 3, for the circuit part 2 that failed the test, a punching hole H will be punched on the substrate 1 by an automated machine, and the punching hole H The range includes the partial area of the circuit part 2 and the identification pattern 3, then the image sensing system fails to detect the identification pattern 3, and it can be determined that the circuit part 2 is a defective product and the cutting step is skipped, so that there are The defective circuit portion 2 is discarded together with the remaining substrate 1 after cutting.

In this embodiment, the identification pattern 3 is rectangular like the punched hole H, but this creation is not limited to the shape of the identification pattern 3 and the punched hole H, wherein the scope of the punched hole H must cover The entire identification pattern 3 is used to prevent the image sensing system from detecting the identification pattern 3 and misjudging the defective product as a good product; the range of the punching hole H can also cover part of the circuit part 2, which can further damage the circuit part 2 The electrical function can avoid the misuse of the defective circuit part 2 and affect the safety of electricity use; moreover, the identification pattern 3 and the circuit part 2 are electrically insulated, and preferably have a safe distance to avoid The electrical test result of the line part 2 is interfered by the metal conductive material of the identification pattern 3 , which leads to misjudgment.

To sum up, the flexible printed circuit board with the punching hole identification pattern of the present invention, by forming the identification pattern within the range of the punching hole used to mark the scrapped circuit board, can make the image sensing system detect whether the Identify the pattern to judge whether the flexible circuit board is a good product or a defective product. If the identification pattern is detected, it means that the function of the flexible circuit board is normal. If the identification pattern is not detected, it means that the flexible circuit board has been punched. Rejection due to holes has the functions of improving the accuracy of automatic identification, saving process time, and avoiding the shipment of defective products.

Although this creation has been disclosed by using the above-mentioned preferred embodiments, it is not intended to limit this creation. Anyone who is familiar with this technology can make various changes and modifications relative to the above-mentioned embodiments without departing from the spirit and scope of this creation. Therefore, the scope of protection of this creation shall include all changes within the meaning and equivalent scope recorded in the appended scope of patent application.

﹝This creation﹞ 1: Substrate 2: Line department 3: Identify patterns C: cutting line H: punching ﹝used to use﹞ 9: Flexible circuit board 91: Line area 92: Identification hole

[Picture 1] A conventional flexible circuit board. [Fig. 2] It is a plan view of the layout of the circuit board of the preferred embodiment of the invention. ［Picture 3］ As shown in the 2nd picture, the circuit board is punched and punched.

1: Substrate

2: Line Department

3: Identify patterns

C: cutting line

Claims (3)

A flexible printed circuit board with a punching identification pattern, comprising: a substrate; a circuit part located on the surface of the substrate, a dicing line surrounding the effective circuit area of the circuit part; and An identification pattern, located on the surface of the substrate, the identification pattern is close to the circuit part and located in the area outside the cutting line, if the circuit part has a defect, a punching hole is punched on the substrate, and the scope of the punching hole covers A partial area of the line portion and the identification pattern. According to claim 1, the flexible printed circuit board with punched identification patterns, wherein the material of the substrate is polyethylene terephthalate or polyimide. According to claim 1, the flexible printed circuit board with punched identification patterns, wherein the circuit portion includes several closely arranged metal wires, the identification pattern and the plurality of metal wires are made of the same material and formed by the same process.

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