TWM582745U - Flexible circuit board with total span auxiliary measurement marks - Google Patents

Abstract

A flexible circuit board having a total span auxiliary measurement mark for solving the complicated and time consuming problem of the bent line measurement procedure in the conventional flexible circuit board. The system comprises: a substrate having an X direction and a Y direction; and a circuit layer, wherein the circuit layer is located on the substrate, the circuit layer has a plurality of circuit strips disposed obliquely, wherein the two circuit strips are Each of the center lines has a designated portion; and two marks are formed on the substrate together with the circuit layer, and the center line or the edge line of the two marks coincide with a designated line extending in the Y direction at the two designated positions, or The center point of the two marks passes through the designated line.

Description

Flexible circuit board with total span auxiliary measurement marks

This creation is about a flexible circuit board, especially a flexible circuit board with a total span assisted measurement mark.

Thanks to today's technology, a large number of electronic products exist in our lives, and there is a tendency to become thinner and lighter for convenience and portability. The flexible circuit board in the electronic product also needs to reduce the effective wiring area on the flexible circuit board by reducing and bending the circuit without reducing the performance or even improving the performance, thereby reducing the area of the flexible circuit board, so as to be suitable for the ever-changing In thin and light electronic products.

Please refer to the first and second figures. In the current industry practice, the customer will specify any two lines 91 for the line height intensively on a flexible circuit board design diagram 9 with high wiring rate, and in the two lines. A designated point is specified on the 91 to define that the two lines 91 have a total span T (Total Pitch, TTP) in the X direction, and the supplier is required to use an automatic image measuring system for the flexible circuit board after wiring ( The Automated Video Measuring System (AVMS) is inspected and measured according to its designated position. As long as the total span T between the two lines 91 falls within the allowable error range, the aforementioned line height is directly estimated. According to the design requirements, it is not necessary to measure the distance between two adjacent lines 91 or the distance between each line 91 to a specific edge line.

In the above, when the two lines 91 for defining the total span T are all parallel to the Y direction, since any center point on the same line 91 is located at the same position in the X direction, in the process of image analysis, As long as any of the midpoints of the two lines 91 are respectively captured, the measurement can be accurately performed. However, based on design requirements or shrinking the flexible circuit board, a diagonal line portion that is not parallel or orthogonal to the Y direction often appears in the line pattern, and the total span T is defined at the oblique line portion of the two lines 91 (as shown in FIG. 2). In the case of the oblique line, the different center points on the same line 91 are located at different positions in the X direction. Therefore, in the process of image analysis, if the specified position is not accurately captured, the measured The total span T will be subject to errors, resulting in detection errors.

Referring to FIG. 2, taking the leftmost line 91 as an example, in order to avoid the aforementioned measurement error, when the total span T is defined in the oblique portion of the line 91, the current practice will first be on the flexible circuit board. A pattern or mark 92 is sought in design Fig. 9, and the center line or edge line of the mark 92 extends in the X direction to form an intersection with the line 91, and the intersection point and the designated point on the left side are measured in the X direction. The spacing is such that a left span difference J is obtained; another right span difference K of the line 91 on the right side in the X direction is found in the same manner.

In this way, when measuring the actual value of the total span T of the two lines 91 specified in the actual direction on the actually manufactured flexible circuit board, the two marks 92 can be separately found to intersect the two lines 91. The second intersection, measuring the distance of the two intersections, and adding or subtracting the left span difference J and the right span difference K to reverse the actual value of the total span T, and then comparing The actual value of the total span T is the ideal value of the total span T on the flexible circuit board design diagram 9 to complete the test.

However, the aforementioned image analysis process is quite complicated, and it is difficult to improve the efficiency of AVMS inspection. In view of this, the conventional flexible circuit boards do still have to be improved.

In order to solve the above problems, the purpose of the present invention is to provide a flexible circuit board with a total span auxiliary measurement mark, which allows AVMS to quickly find the mark and measure in the detection area when inspecting a flexible circuit board having a diagonal line pattern. Or calculate the measurement distance specified by the customer.

The second purpose of the present invention is to provide a flexible circuit board having a total span auxiliary measurement mark. When manufacturing a flexible circuit board, a mark different from the line shape or size is added on the principle of not affecting the line function.

The directionality or similar terms in the full text of this work, such as "before", "after", "left", "right", "upper (top)", "lower (bottom)", "inside" and "outside" The "lateral" and the like are mainly referred to the orientation of the additional drawings, and the directionality or its approximation is only used to assist in the description and understanding of the embodiments of the present invention, and is not intended to limit the present invention.

The use of the terms "a" or "an" or "an" or "an" or "an" or "an" The concept also includes the plural, unless it clearly means other meanings.

The flexible circuit board with the total span auxiliary measurement mark of the present invention comprises: a substrate having an X direction and a Y direction which are orthogonal to each other; a circuit layer, the circuit layer is located on the substrate, and the circuit layer has a slope a plurality of circuit strips disposed on the center line of the two of the foregoing circuit strips; and a second mark formed on the substrate together with the circuit layer, wherein the center line or the side line of the two marks respectively A specified line extending in the Y direction is coincident, or the center point of the two marks passes through the designated line.

The flexible circuit board with the total span auxiliary measurement mark of the present invention comprises: a substrate having an X direction and a Y direction which are orthogonal to each other; a circuit layer, the circuit layer is located on the substrate, and the circuit layer has a slope a plurality of circuit strips disposed on the center line of the two of the foregoing circuit strips; and a second mark formed on the substrate together with the circuit layer, wherein the center line or the side line of the two marks respectively A line extending in the X direction at the designated position coincides, or a center point of the two marks passes through a line extending in the X direction at the two designated positions.

Accordingly, the flexible circuit board with the total span auxiliary measurement mark of the present invention is provided on the flexible circuit board for the obliquely disposed circuit strip on the flexible circuit board, so that the line is formed on the flexible circuit board. When the AVMS is inspected, it can quickly measure to calculate the actual value of the total span T between the marks, and compare the actual value of the total span T and the total span ideal value on the flexible circuit board design. In order to complete the preliminary line wiring yield check; compared with the current technology, this creation does not need to rely on other reference marks on the translation design or define a large number of points or lines on the molding circuit, which increases the operating efficiency of the AVMS. And simplify the efficacy of the AVMS step.

The substrate is divided into a use area and a non-use area, the non-use area is located on the outer circumference of the use area, and the two marks are located in the non-use area. In this way, it has the effect of improving the convenience of setting.

The plurality of circuit strips each have an extension extending into the non-use area, and the two marks are respectively located on two sides of the extension of the plurality of circuit strips in the X direction. In this way, the two symbols are clearly defined, so when compared with the customer, the difference between the two marks is not measured, and the difference is measured, which has the effect of reducing misunderstanding.

Wherein, each of the marks is located between two of the aforementioned circuit strips. In this way, each of the tokens can be set according to the customer's needs, which has the effect of improving the flexibility of setting.

Wherein, each of the marks is connected only to one of the aforementioned circuit strips. In this way, the circuit strip is changed to form the mark, and does not affect the functions of other circuit strips, and has the function of increasing the function of the circuit strip.

Wherein, each of the marks has a circular shape. Thus, since the circular shape is simple and has only one center point, it has the effect of increasing the speed of the AVMS operation.

The non-use area has a plurality of support strip setting areas, and the circuit layer has a plurality of support strips located in each of the support strip setting areas, and the two marks are respectively located in different support strip setting areas. In this way, the two marks are disposed in the support bar setting area, and the two marks can be set without changing the line pattern, and the utility model has the effect of effectively utilizing space.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to FIG. 4, the flexible circuit board with the total span auxiliary measurement mark of the present invention can be used to quickly measure the aforementioned total span T, which is based on the predetermined designation on a circuit board design drawing. A location is formed whereby it is checked whether the wiring on the flexible circuit board is as expected.

Referring to Figures 4 and 5, the first embodiment of the flexible circuit board having the total span auxiliary measurement mark is a substrate 1, a circuit layer 2 and a second mark 3. The circuit layer 2 is The two marks 3 are molded together on the substrate 1.

The substrate 1 can be made, for example, of Polyimide (PI), and has the characteristics of light weight, thin thickness, softness and flexibility. The substrate 1 can define an X direction and a Y direction which are orthogonal to each other. The substrate 1 can have a use area 11 and a non-use area 12, and the non-use area 12 is disposed around the use area 11. Also, the non-use zone 12 may have a plurality of support bar setting zones 13.

The circuit layer 2 is located on the substrate 1. In the embodiment, the circuit layer 2 is a circuit pattern laid on the substrate 1. The circuit layer 2 has a plurality of circuit strips 21 and a plurality of support strips 22 integrally formed on the substrate 1. The plurality of circuit strips 21 are mainly located in the use area 11, but may also partially extend into the non-use area 12; The plurality of circuit strips 21 are mainly used for transmitting electronic signals, and the portion extending partially into the non-use area 12 can be used for interconnecting electronic products and maintaining line integrity. The plurality of support strips 22 are distributed in the plurality of support strip setting areas 13, and the number of the support strips 22 in each of the support strip setting areas 13 is preferably several, to strengthen the support strips by the plurality of support strips 22 The structural strength of zone 13. In this embodiment, a plurality of circuit strips 21 may be in a partially or entirely obliquely disposed configuration. Moreover, since the plurality of circuit strips 21 are disposed obliquely, they are located in the use area 11 and the non-use area 12. The circuit strip 21 produces an offset in the X direction.

Referring to FIG. 5 again, the second symbol 3 is used for positioning and measuring the total span T. In detail, the center line of the two aforementioned circuit strips 21 respectively has a designated position H, and the two designated portions The H-series corresponds to a predetermined position indicated on the circuit board design drawing, and the two designated positions H extend in the Y direction and form two parallel designated lines F, whereby the two designated lines F can be used as a reference to respectively set the two Mark 3, so as long as the spacing between the two marks 3 is measured, it is equivalent to measuring the actual span T actual value formed between the two designated points H. The two symbols 3 may be symbols or lines of various shapes, and may be distinguished from the circuit board 21 or other components on the circuit board, and the creation is not limited.

For example, in the embodiment, when the plurality of circuit strips 21 respectively have an extension portion 23 extending into the non-use area 12 of the substrate 1, the two marks 3 may be disposed in the non-use area 12, and the number The extensions 23 of the plurality of circuit strips 21 are located between the two marks 3. In this way, the non-use area 12 of the substrate 1 can be provided with the two marks 3, so that the shape of the two marks 3 has a high degree of design freedom, and the molding is relatively easy. Moreover, the two marks 3 may be a rectangle such that the center line or the side line of the two marks 3 coincide with the two designated lines F, respectively, whereby the shape of the two marks 3 is simple and suitable for being arranged in a dense and highly similar circuit. In the pattern, not only can it be quickly recognized in the AVMS, but also the center line or the edge of the two marks 3 can be easily found, which helps to quickly obtain the actual value of the total span T.

Please refer to FIG. 6 , which is a partial enlarged view of the second embodiment of the present invention. The two symbols 3 may be respectively a plurality of rectangles, and the plurality of rectangles are arranged at equal intervals in the Y direction, except for the above energy. In the AVMS, it is quickly recognized and the centerline or sideline is easy to find. It can also be used to confirm whether the centerline or the edge of any two rectangles are collinear. If the collinear line is used as the benchmark for measurement, the measurement is improved. Accuracy, avoiding the measurement error caused by the molding error of the mark 3 itself.

Referring to FIG. 7, which is a partial enlarged view of the third embodiment of the present creation, the two marks 3 may be respectively circular, when the selected two circuit strips 21 are only located in the use area 11 and are not extended into the non-use. In the area 12, the two designated locations H may be respectively located on the center line of the two circuit strips 21, and the two designated lines F respectively extend from the two designated locations H to the Y direction and form parallel to each other, and the two designated lines F may pass respectively. The center point of the two marks 3, and the extensions 23 of the plurality of circuit strips 21 are located between the two marks 3; thereby, the mark 3 which is circular is not only easy to shape but is not easily confused with other lines, the mark The center point of 3 can also be quickly and accurately identified, which helps to improve the efficiency of AVMS operations. In addition, the symbol 3 having a circular shape can also be applied to other different embodiments. Similarly, the rectangular symbol 3 or the plurality of rectangular symbols 3 can also be applied to the circuit layer 2 type disclosed in this embodiment. .

Referring to FIG. 8, which is a partially enlarged view of the fourth embodiment of the present invention, when the designated line F passes through the extension portion 23 of the other circuit strip 21, the shape of the extension portion 23 of the circuit strip 21 is changed. The function of the whole circuit layer 2 is not affected, so that the design of the flexible circuit board can be changed, so that the extensions 23 of the plurality of circuit strips 21 and the designated line F do not intersect each other, so that the non-use area 12 generates enough The space of the two marks 3 is set such that the two marks 3 can be respectively disposed between the extensions 23 of any two of the circuit strips 21, and the two marks 3 do not overlap with the extensions 23 of any of the circuit strips 21, and The center line or the side line of the two marks 3 respectively coincide with the two designated lines F; at this time, the two marks 3 may be located between the plurality of circuit strips 21. Similarly, the type of the two symbols 3 may be the symbol 3 of any of the above types, and is not limited herein.

Please refer to FIG. 9 , which is a partial enlarged view of a fifth embodiment of a flexible circuit board having a total span auxiliary measurement mark. The two marks 3 can be respectively connected to one of the circuit strips 21 , for example, connected thereto. The extension portion 23 of the circuit strip 21 causes the two designated lines F to coincide with the edges of the two marks 3; each of the marks 3 connects only one of the circuit strips 21 without simultaneously connecting two adjacent circuit strips 21 to avoid The conduction of two adjacent circuit strips 21 causes the original line design to be affected. Accordingly, each of the marks 3 is connected to the circuit strip 21, so that each of the marks 3 can be more easily formed, which helps to improve the molding yield of each of the marks 3.

It is worth mentioning that on the flexible circuit board of the creation, the two marks 3 do not have to have the same type, for example, one mark 3 is rectangular, and the other mark 3 is circular, and the auxiliary measurement can also be achieved. The effect of the total span T.

Referring to FIG. 10, it is a partial enlarged view of a sixth embodiment of a flexible circuit board having a total span auxiliary measurement mark, and the main difference from the foregoing embodiments is that two designated circuit strips 21 are provided. The center line has a designated position H, and the two marks 4 of the embodiment are located outside the two designated positions H in the X direction, that is, the two designated circuit strips 21 are located between the two marks 4.

In detail, please refer to FIGS. 10 and 11, the two marks 4 may be located in the non-use area 12 of the substrate 1 to avoid the plurality of circuit strips 21 in the use area 11, and reduce the lines affecting the flexible circuit board. design. Further, the center points of the two marks 4 respectively extend through the extension lines E1 and E2 extending in the X direction from the two designated positions H. Wherein, the two specified locations H may or may not be opposite in the X direction, and the present creation is not limited.

According to the foregoing configuration, in the process of image analysis, the center point of one of the marks 4 is obtained and extends in the X direction to form the line E1, and the intersection point P1 of the extension line E1 and the corresponding line of the circuit board 21 is obtained. P2, it is possible to find one of the designated points H from the midpoints of the two intersection points P1 and P2; similarly, to obtain another specified position H, the spacing of the two designated points H can be measured to obtain the total span T. value. The inspection operation can be completed by continuing to compare the actual value of the total span T with the ideal value of the total span T.

It is worth mentioning that the shape of the two marks 4 is not limited, but it is preferably selected to be circular, and the circular mark 4 is not only easy to shape but is not easily confused with other lines, and the center point of the mark 4 can also be Quick and accurate identification helps improve the efficiency of AVMS.

Referring to FIG. 12, it is a partial enlarged view of a seventh embodiment of a flexible circuit board having a total span auxiliary measurement mark. The two marks 4 may be selected to be rectangular to be centered by the two marks. Or the edge lines respectively coincide with the extension lines E1, E2 extending in the X direction at the two designated positions. Moreover, since the plurality of support bars 22 located in the support strip setting area 13 of the substrate 1 are used to reinforce the flexible circuit board instead of transmitting the control signal, the embodiment further selects the two marks 4 In the support strip setting area 13 of the substrate 1, the arrangement or length of the support strip 22 in the support strip setting area 13 can be changed to meet the setting requirement of the mark 4 to form a space in which the mark 4 can be set. It does not affect other circuit designs for transmitting control signals.

In summary, the soft circuit board with the total span auxiliary measurement mark of the present invention is provided on the flexible circuit board for the diagonally disposed circuit strip on the flexible circuit board, so that the flexible circuit board formed by the line is formed. When using AVMS for inspection, it is possible to quickly measure to calculate the actual value of the total span T between the marks, and compare the actual value of the total span T described above with the total span on the flexible circuit board design. Ideal value to complete the preliminary line wiring yield check; this creation does not have to rely on other reference marks on the translation design or define a large number of points or lines on the molding circuit, compared with the current technology, with the addition of AVMS. Work efficiency and simplify the effectiveness of the AVMS step. Wherein, the mark is disposed on the flexible circuit board in a manner of avoiding or bypassing the circuit strip according to the principle of not affecting the line function, and has the effect of effectively utilizing space.

Although the present invention has been disclosed by the above-described preferred embodiments, it is not intended to limit the present invention, and it is still within the spirit and scope of the present invention to make various changes and modifications to the above embodiments. The technical scope of the protection is created, so the scope of protection of this creation is subject to the definition of the patent application scope attached.

[this creation]  1‧‧‧Substrate  11‧‧‧Use area  12‧‧‧Unused area  13‧‧‧Support strip setting area  2‧‧‧Line layer  21‧‧‧Circuit strip  22‧‧‧Support strip  23‧‧‧Extension  3, 4‧‧ ‧ marks  9‧‧‧Soft circuit board design  91‧‧‧ lines  92‧‧‧ mark  E1, E2‧‧‧ extension line  F‧‧‧Specified line  H‧‧‧ designated office  J‧‧‧Left span difference  K‧‧‧Right span difference  P1, P2‧‧‧ intersection  T‧‧‧ total span  

[Fig. 1] A plan view of a conventional flexible circuit board.  [Fig. 2] A partially enlarged view of A in Fig. 1.  [Fig. 3] A plan view of the first embodiment of the present creation.  [Fig. 4] A partially enlarged view of B in Fig. 3.  [Fig. 5] A partially enlarged view of a second embodiment of the present creation.  [Fig. 6] A partially enlarged view of a third embodiment of the present creation.  [Fig. 7] A partially enlarged view of a fourth embodiment of the present creation.  [Fig. 8] A partially enlarged view of a fifth embodiment of the present creation.  [Fig. 9] A partially enlarged view of a sixth embodiment of the present creation.  [Fig. 10] A partially enlarged view of the C area in Fig. 9.  [Fig. 11] A partially enlarged view of a seventh embodiment of the present creation.  

Claims (10)

A flexible circuit board having a total span assisted measurement mark, comprising:  a substrate having an X direction and a Y direction orthogonal to each other;  a circuit layer, the circuit layer is located on the substrate, the circuit layer has a plurality of circuit strips arranged obliquely, wherein the center lines of the two aforementioned circuit strips respectively have a designated position;  a second mark is formed on the substrate together with the circuit layer, and a center line or an edge line of the two marks coincides with a designated line extending in the Y direction, or a center point of the two marks respectively passes through the designated line .   A flexible circuit board having a total span auxiliary measurement mark as described in claim 1, wherein the substrate is divided into a use area and a non-use area, the non-use area being located on an outer circumference of the use area, the two marks Located in the non-use area. A flexible circuit board having a total span auxiliary measurement mark as described in claim 2, wherein the plurality of circuit strips each have an extension extending into the non-use area, and the two marks are respectively located in the plurality of circuit strips. The extensions are on the two sides in the X direction. A flexible circuit board having a total span auxiliary measurement mark as described in claim 2, wherein each of the marks is located between two of the aforementioned circuit strips. A flexible circuit board having a total span auxiliary measurement mark as described in claim 2, wherein each of the marks is connected to only one of the aforementioned circuit strips. A flexible circuit board having a total span assist measurement mark according to any one of claims 1 to 5, wherein each of the marks has a circular shape. A flexible circuit board having a total span assisted measurement mark, comprising:  a substrate having an X direction and a Y direction orthogonal to each other;  a circuit layer, the circuit layer is located on the substrate, the circuit layer has a plurality of circuit strips arranged obliquely, wherein the center lines of the two aforementioned circuit strips respectively have a designated position;  a second mark is formed on the substrate together with the circuit layer, and a center line or an edge line of the two marks respectively coincide with a line extending in the X direction at the two designated positions, or a center point of the two marks passes through the two designated positions respectively A line extending in the X direction.   A flexible circuit board having a total span auxiliary measurement mark as described in claim 7 wherein the substrate is divided into a use area and a non-use area, the non-use area being located at an outer circumference of the use area, the two marks Located in the non-use area. A flexible circuit board having a total span auxiliary measurement mark according to claim 8, wherein the non-use area has a plurality of support bar setting areas, and the circuit layer has a plurality of support bars located in each of the support bar setting areas. The two symbols are respectively located in different support bar setting areas. A flexible circuit board having a total span assist measurement mark according to any one of claims 7 to 9, wherein each of the marks has a circular shape.