JPH07123061B2 - Flexible board connector manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a connector portion provided at an end of a flexible board.

[0002]

2. Description of the Related Art Conventionally, in order to connect a flexible board to another electronic component, a conductor pattern is drawn out from an end of the flexible board to form a connector portion, which is then attached to another electronic component on a female side. This is done by plugging it into the connector.

FIG. 24 is a perspective view showing a connector portion 81 of a conventional flexible substrate of this type. As shown in the figure, the flexible substrate (including the connector portion 81) is
The conductive pattern 82 is formed on a large film by screen printing or etching, and a resin reinforcing plate 86 is adhered to the back surface of the conductive pattern 82, which is cut by press working. The width L of the connector portion 81 is slightly smaller than the width of the insertion hole of the female connector (not shown) to be inserted.

The reinforcing plate 86 is attached in order to reinforce the strength of the connector portion 81 of the flexible board which is thin and flexible.

[0005]

By the way, with the recent miniaturization of the device, the miniaturization of the connector portion 81 of the flexible substrate has been attempted, which causes the following problems. To manufacture the connector portion 81 of the flexible board,
The conductor pattern 82 is formed on the large resin film by etching or screen printing, and then the resin film is cut. Therefore, as shown in FIG. 24, the pitch interval p of each conductor pattern 82 can be accurately and accurately made constant, but due to a mechanical error when the resin film is cut, a gap between both side edges of the connector portion 81 and the conductor pattern 82 is caused. Gaps l ₂ and l ₃ are generated (that is, l ₂ ≠ l ₃ ). When the gaps l ₂ and l ₃ are deviated, each conductor pattern 82 cannot be accurately connected to each metal contact in the female connector even if the connector portion 81 is accurately inserted into the insertion hole of the female connector. In particular, the narrower the pitch between the conductor patterns 82, the greater the problem, and in some cases, the conductor patterns 82, which should not be connected, come into contact with the metal contacts in the female connector, resulting in a short circuit.

Specifically, the pitch p of the conductor pattern 82 is
= 0.5 mm, the press deviation in the pitch direction (width direction) needs to be 0.1 mm or less, but this is difficult and has no mass productivity.

When the connector portion 81 is miniaturized to narrow the pitch P between the conductor patterns 82, when the conductor patterns 82 are formed by etching, there is no problem, but when the screen is formed by screen printing. Had difficulty in creating its fine pattern.

When the conductor pattern 82 is formed by screen-printing a silver paste, the pitch P is 0.5 mm,
When the pattern width l is about 0.3 mm and the gap g is about 0.2 mm, the silver migration has an effect, which makes it difficult to commercialize.

Female connector insertion hole and connector portion 81
A predetermined play is provided in the width direction between the gaps in order to make the insertion of the connector portion 81 smooth.
As shown in FIG. 5A, the insertion hole 91 of the female connector 90
When the connector portion 81 is inserted therein, the connector portion 81 may be inserted at a slight angle θ with respect to the insertion hole 91. At this time, the pitch interval p of the conductor pattern 82
If (see FIG. 24) is small, the conductor pattern 82, which should not be connected, and the metal contact in the female connector 90 may come into contact with each other to cause a short circuit.

When the connector portion 81 is inserted into the insertion hole 91 of the female connector 90, the insertion of the connector portion 81 into the insertion hole 91 may be stopped halfway as shown in FIG. 25 (b). . In other words, since there is nothing in the connector portion 81 that indicates how much the connector portion 81 is inserted, the connection between the two is mistakenly recognized as completed and the incomplete connection state is left. Of.

The present invention has been made in view of the above points, and an object thereof is that each conductor pattern of the connector portion can be surely connected to each corresponding metal contact in the female connector even if the size is reduced, and the screen is A flexible printed circuit board that can easily form fine patterns even by using printing and can also take measures against silver migration.
It is to provide a manufacturing method of a kuta part .

[0012]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is directed to a plurality of conductor packs on a synthetic resin film.
A turn is formed and at the end of these turns are several conductors.
Form a large-area conductor land that is completely connected to the body pattern
And the process of forming the conductor land portion of the film
Applying a thick coating of insulating paint to the back side to cure it, and
By pressing the film and cured insulating paint
The outer shape of the film is formed at the same time as the outer shape of the film is formed.
Cut through the conductor part for each conductor pattern.
Flexible substrate by the process of forming slits
The connector part was manufactured.

The present invention also includes a step of forming a plurality of conductor patterns on a synthetic resin film and forming a large-area conductor land portion, which is connected to the plurality of conductor patterns, at the ends thereof. A step of attaching a reinforcing plate to the back side of the surface of the film on which the conductor land portion is provided, and the film and the attached reinforcing plate are pressed to form the outer shape thereof and at the same time, the conductor land portion of the film is formed. And the step of providing a slit for penetrating each of the conductor patterns for each of the conductor patterns to manufacture the connector portion of the flexible substrate.

The present invention also includes a step of forming a plurality of conductor patterns on a synthetic resin film and forming a large-area conductor land portion, which is connected to the plurality of conductor patterns, at the end thereof. A step of forming a slit for penetrating the conductor land portion of the film for each of the conductor patterns by pressing, and attaching a reinforcing plate to the back surface side of the surface of the film on which the slit is provided. a step, the outer by pressing the film and the reinforcing plate
The connector part of the flexible substrate was manufactured by the process of extracting the shape . The present invention also relates to a film made of synthetic resin.
Form multiple conductor patterns on top and
A large area where all of these conductor patterns are connected to
The step of forming the conductor land portion of the film, and the conductor layer of the film.
Cut through the conductor part for each conductor pattern.
The step of forming the slits by pressing,
Thick coating of insulating paint on the back side of the surface with the slits of the film
And curing, and the film and cured insulation
By the process of pressing the paint and extracting the outline
The connector part of the flexible board was manufactured.

[0015]

When the connector portion of the flexible substrate is manufactured by the above method, the distance from both ends of the connector portion in the width direction to the conductor land portions separated by the slit and the pitch between the separated conductor land portions become constant, The gap will not occur. Therefore, even if the connector portion becomes small, each conductor pattern can be surely connected to each corresponding metal contact in the female connector.

Further, since the pattern of the connector portion is formed by the slit formed by mechanical press cutting, a narrow gap can be easily formed. Therefore, even if the connector portion is downsized, the pattern of the connector portion can be easily formed. It can be a fine pattern.

Further, since a fine gap having a narrow width can be easily produced, the width of each pattern of the connector portion can be increased and the reliability of connection of the female connector to the metal contact is improved.

Since the film is provided with slits, the conductor lands are separated by the slits. Therefore, the structure is effective as a countermeasure against silver migration, as compared with the case where the conductor patterns are printed close to each other on the film without providing slits.

[0019]

Embodiments of the present invention will now be described in detail with reference to the drawings. [First Embodiment] FIGS. 1 to 5 are views showing a process of manufacturing a connector portion of a flexible substrate according to a first embodiment of the present invention, in which (a) is a plan view and (b) is a side view. It is a sectional view (AA sectional view of FIG. 1A).

In order to manufacture the connector portion of this flexible substrate, first, as shown in FIG. 1, a synthetic resin film 1 is used.
At the same time, the eight conductor patterns 11 are printed on the screen 0 by screen printing, and at the same time, the large-area conductor land portions 13 connected to the conductor patterns 11 are printed at the end portions of the eight conductor patterns 11. Then, the insulating film 12 is printed on the conductor pattern 11 (however, the description of the insulating film 12 is omitted in the following figures).

Next, as shown in FIG. 2, the conductor land portion 13 is formed.
The carbon film 15 is printed on top of the above. Although the thickness of the conductor land portion 13 and the carbon coating 15 are shown to be substantially the same as the thickness of the film 10 in the drawing, they are actually much thinner than the film 10. Specifically, when the thickness of the film 10 is 0.1 mm, the total thickness of the conductor land portion 13 and the carbon film 15 is about 0.015 mm.

Next, as shown in FIG. 3, on the back surface of the film 10, first, a first layer of UV curable paint (ultraviolet curable paint) 17 is applied to the screen once to a thickness of about 150 μm. Apply thickly by printing. And this UV
The curable coating material 17 is irradiated with ultraviolet rays to be cured.
Next, the second layer of UV curable paint (UV curable paint) 18
Is thickly applied by one screen printing so as to have a thickness of about 50 μm. Then, the UV curable coating material 18 is irradiated with ultraviolet rays to be cured. The thickened UV curable coatings 17 and 18 have sufficient strength to reinforce the film 10.

Next, the film 10 is press-cut at the portion indicated by the alternate long and short dash line in FIG. 4 to remove the connector portion 1 shown in FIG. At the same time, the conductor land portion 13
And carbon film 15, film 10 and UV curable paint 1
Seven linear slits 20 penetrating through 7, 18 are provided. Therefore, the conductor land portion 13 and the carbon film 1
5 is divided into 8 parts, and each divided part is connected to each conductor pattern 11. In other words,
Each separated conductor land portion 13 (and carbon film 1
5) is the end of each of the eight conductor patterns 11.

Since the tip of the connector portion 1 is connected by the connecting portion 21, even if the slit 20 is provided, it does not come apart, and as described above, the UV curable paints 17, 18 are provided on the back surface of the connector portion 1. Is thickly applied and cured, the connector portion 1 can be reinforced sufficiently and reliably.

When manufactured as described above, the outer shape of the connector portion 1 and the seven slits 20 are formed by one press cut, so that both ends of the connector portion 1 (1-1 and 1 shown in FIG. 5). The distances L ₁ and L ₂ from 1-2) to the conductor land portions 13 separated from each other are exactly L ₁ = L ₂ , and the pitch P ₁ between the separated conductor land portions 13 is also exactly constant. Therefore, no deviation will occur anywhere. Therefore, even if the connector portion 1 becomes small, each conductor pattern 11 can be surely connected to the corresponding metal contact 51 in the female connector 50 (see FIG. 6 described below).

On the other hand, each of the conductor land portions 13 that have been cut into pieces is completely separated by the slits 20, so that it is extremely effective as a countermeasure against silver migration.

In the first embodiment, the UV curable paints 17 and 18 are used to reinforce the connector portion 1, but a reinforcing plate may be attached instead.

By the way, in this first embodiment, FIG.
Unlike the conventional example shown in FIG. 4, the tip of the conductor land portion 13 (and the carbon film 15) that has been cut off is the connector portion 1
Is not provided up to the tip of the connector (the connector portion 1 has a connecting portion 21 at the tip). 6A and 6B are views showing a female connector 50 into which the connector portion 1 is inserted. FIG. 6A is a plan view of the female connector 50 alone, and FIG. 6B is a HH cross section of FIG. The figure and the figure (c) are female connectors 50.
It is sectional drawing when the connector part 1 is inserted in. As shown in the figure, the metal contact 51 in the female connector 50 does not contact the tip portion of the connector portion 1, but contacts at a position h that is a predetermined distance from the tip. Therefore, as in the first embodiment, the conductor land portion 13 reaches the tip of the connector portion 1.
There is no problem even if (and the carbon film 15) is not provided.

Further, in the above-described embodiment, the width of each of the divided conductor land portions 13 can be made larger than the width of the conductor pattern 11 by reducing the width of the slit 20. For this reason, when the connector portion 1 is inserted into the female connector shown in FIG. 6, the cut conductor lands 13 come into contact with the metal contacts 51 in the female connector 50 (normally point contact). If the width of the land portion 13 is large, the contactable area between the two is widened correspondingly, and even if there is some deviation between the two, the connection between the two can be surely made and the reliability thereof is improved.

[Second Embodiment] FIGS. 7 to 10 are views showing a process of manufacturing a connector portion of a flexible substrate according to a second embodiment of the present invention, in which (a) is a plan view and (b) is a plan view. ) Is a side sectional view (C-C sectional view of FIG. 7A). In this embodiment, unlike the first embodiment,
An example of etching a copper foil as a conductor pattern is shown.
This will be described below.

That is, first, as shown in FIG. 7, a conductor pattern 61 is formed at the same time by etching a synthetic resin film 60 on which a copper foil is adhered.
The conductor land portion 63 is formed. And the conductor pattern 61
An insulating film 62 is printed on the top.

Next, as shown in FIG. 8, a UV curable coating material 67 is thickly applied and cured on the back surface of the film 60, and a UV curable coating material 68 is further applied and cured thereon.

Next, the film 60 is press-cut at the portion indicated by the alternate long and short dash line in FIG. 9 to remove the connector portion 6 shown in FIG. At this time, seven linear slits 69 are simultaneously formed.

The present invention can be applied even when the copper foil is thus etched as the conductor pattern.

[Third Embodiment] FIGS. 11 to 15 are views showing a process of manufacturing a connector portion of a flexible substrate according to a third embodiment of the present invention, in which (a) is a plan view and (b) is a plan view. ) Is a side sectional view (sectional view taken along line D-D of FIG. 11A)
Is. The difference of this embodiment from the first embodiment is that
It is the shape of a press cut. This will be described below.

That is, first, as shown in FIG. 11, eight conductor patterns 71 and conductor land portions 73 are screen-printed on the synthetic resin film 70. And the conductor pattern 71
An insulating film 72 is printed on top.

Next, as shown in FIG. 12, the conductor land portion 7
3 is printed with a carbon film 75, and then, as shown in FIG.
7, 78 are thickly coated as in the first embodiment.

Next, the film 70 is press-cut at the one-dot chain line portion shown in FIG. 14 to remove the connector portion 7 shown in FIG. At this time, seven slits 79 are simultaneously provided. Here, these slits 79 are
Each slit 7 is narrowed down toward the tip of the connector part 7.
It is formed so that the space between the terminals 9 is narrowed, and in accordance with this, the width R of the tip portion of the connector portion 7 is also narrowed.

The reason for press cutting into such a shape is as follows. That is, as described in the section of the prior art, there is a limit to narrowing the pitch interval between the conductor patterns 71 formed on the film 70. Especially in the case of screen printing, it is difficult to reduce the size of the fine pattern as it is. On the other hand, since the slit 79 is formed by machining, it is easy to reduce its width, for example, it is easy to make its width about 0.1 mm to 0.2 mm. That is, it is easy to manufacture a fine gap having a narrow width (in other words, to manufacture a fine pattern having a narrow pitch interval).

Therefore, as in this embodiment, the slit 7
If the width of each conductor pattern 71 is narrowed by narrowing the width of the conductor pattern 7 toward the tip of the connector portion 7, the width of each conductor pattern 71 itself formed by screen printing and the pitch interval between the conductor patterns 71 can be reduced. Even if it is made large, the width of each pattern itself in the connector portion 7 and the pitch interval between each pattern can be easily narrowed. That is, even if the connector portion 7 is downsized, each pattern of the connector portion 7 can be easily made into a fine pattern. Therefore, this example was press-cut into the above shape.

On the other hand, if step portions 80 (see FIG. 15) are provided on both sides of the film 70 as in this embodiment, the connector portion 7 is inserted into the insertion opening 96 of the female connector 95 as shown in FIG. At this time, the stepped portion 80 abuts on both sides of the inlet portion of the insertion port 96 of the female connector 95 and can be used for positioning. As a result, the connector portion 7 is not set in a state of being obliquely inserted into the female connector 95, and the insertion of the connector portion 7 into the female connector 95 is not stopped halfway.

[Fourth Embodiment] FIGS. 17 to 22 are views showing a process of manufacturing a connector portion of a flexible substrate according to a fourth embodiment of the present invention, in which (a) is a plan view and (b) is a plan view. ) Is a side sectional view (BB sectional view of FIG. 17A)
Is.

In order to manufacture the connector portion of this flexible substrate, first, as shown in FIG. 17, eight conductor patterns 31 are printed on the synthetic resin film 30 by screen printing, and at the same time, the eight conductor patterns 31 are formed. A large-area conductor land portion 33 is printed on the end portion of.

Next, as shown in FIG. 18, a carbon film 35 is printed so as to cover the conductor land portion 33. Note that the thickness of the conductor land portion 33 and the carbon film 35 is actually much smaller than the thickness of the film 30, as in the case of the first embodiment.

Next, as shown in FIG. 19, the conductor land portion 3
Nine linear slits 37, 37 ', 37 "penetrating the film 3, the carbon film 35 and the film 30 are provided by press working. Here, the central seven slits 37 are provided.
Is for cutting the conductor land portion 33 (and the carbon film 35) so that each cut portion is connected to each conductor pattern 31. Further, the slits 37 ', 37 "at both ends are for forming the outer shape in the width direction of the connector portion and are made wide.

Next, as shown in FIG. 20, a reinforcing plate 39 made of synthetic resin is attached to the back surface side of the surface of the film 30 on which the conductor land portions 33 (and the carbon film 35) are provided. The width of the reinforcing plate 39 is formed to be the same as or slightly smaller than the width between the inner sides 3-1 and 3-2 of the slits 37 ', 37 "at both ends.
If the reinforcing plate 39 is attached to the back surface of the film 30 while inserting the pins into 7 ', 37 "for positioning and guiding them with the pins, the reinforcing plate 39 will surely have the slits 37',
It is attached so that it does not protrude from the inside sides 3-1 and 3-2 of 37 ″.

Then, the film 30 is press-cut at the portion indicated by the alternate long and short dash line in FIG. 21 and extracted to complete the connector portion 3 of the flexible substrate as shown in FIG.

By the way, when manufactured as described above, the inner sides 3-1 and 3-2 of the slits 37 ', 37 "directly serve as both sides of the connector portion 3. Therefore, both end sides 3- of the connector portion 3 are formed. Each conductor land portion 3 separated from 1, 3-2
The distances L ₃ and L _{4 to} 3 (and the carbon film 35) are exactly L ₃ = L ₄ , and the separated conductor land portions 33 are
The pitch P ₂ between (and the carbon film 35) is also exactly constant, and no deviation occurs. Therefore, this connector part 3
However, each conductor pattern 31 can be accurately connected to the corresponding metal contact of the female connector.

On the other hand, as for the distance between the separated conductor land portions 33, as shown in FIG. 22B, the gap between them (that is, the width of the slit 37) is 0.2 mm, and the film 3
If the thickness of 0 is 0.1 mm, then 0.2 mm + 0.1 mm x 2
= 0.4 mm. That is, the distance between the separated conductor land portions 33 is increased by twice the thickness of the film 30. That is, the connector portion 3 also has a structure effective as a silver migration countermeasure.

In the fourth embodiment, the reinforcing plate 3
Although No. 9 was used, the insulating coating may be thickly applied and cured as in the first embodiment instead. Further, in this embodiment, the conductor pattern 31 and the conductor land portion 33 are formed by screen printing, but instead of this, the film 30 is used.
You may form a conductor pattern by etching the copper foil stuck on top. In this case, the carbon film 35 becomes unnecessary.

[Fifth Embodiment] FIG. 23 is a plan view showing a fifth embodiment of the present invention, which is an application example of the fourth embodiment. This embodiment is different from the fourth embodiment in that the slit 47 is formed into a bent line instead of a straight line so that the shape of each of the separated conductor lands is zigzag, and the female of each conductor land is formed. The area of the contact portion of the connector (not shown in the figure) is increased.
Needless to say, such a change in the shape of the slit can be applied to the first to third embodiments.

Needless to say, the shape of the slit can be modified in various ways other than the above-mentioned embodiments.

[0053]

As described in detail above, the present invention has the following excellent effects. The distance from both ends of the connector portion in the width direction to the conductor land portions separated by the slit and the pitch between the separated conductor land portions are constant, and the deviation does not occur. Therefore, even if the connector portion becomes small, each conductor pattern can be surely connected to each corresponding metal contact in the female connector.

Since the pattern of the connector portion is formed by the slit formed by mechanical press cutting, a fine gap having a narrow width (about 0.1 mm to 0.2 mm) can be easily formed. Therefore, the connector portion can be miniaturized. Also, the pattern of the connector portion can be easily made a fine pattern.

Since a fine gap having a narrow width can be easily manufactured, the width of each pattern of the connector portion can be increased, and the reliability of connection of the female connector to the metal contact is improved.

Since the film forming the connector portion of the flexible substrate is provided with the slits, the structure is effective as a countermeasure against silver migration when silver is used as the conductor pattern.

[Brief description of drawings]

FIG. 1 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a process of manufacturing the connector portion of the flexible substrate according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a process of manufacturing the connector portion of the flexible substrate according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a process of manufacturing the connector portion of the flexible substrate according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a process of manufacturing the connector portion of the flexible substrate according to the first embodiment of the present invention.

FIG. 6 is a view showing a female connector 50.

FIG. 7 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a second embodiment of the present invention.

FIG. 8 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a second embodiment of the present invention.

FIG. 9 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a second embodiment of the present invention.

FIG. 10 is a diagram showing a process of manufacturing the connector portion of the flexible substrate according to the second embodiment of the present invention.

FIG. 11 is a diagram showing a process of manufacturing the connector portion of the flexible substrate according to the third embodiment of the present invention.

FIG. 12 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a third embodiment of the present invention.

FIG. 13 is a diagram showing a process of manufacturing the connector portion of the flexible substrate according to the third embodiment of the present invention.

FIG. 14 is a diagram showing a process of manufacturing the connector portion of the flexible substrate according to the third embodiment of the present invention.

FIG. 15 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a third embodiment of the present invention.

16 is a diagram showing a state in which the connector section 7 is inserted into the female connector 95. FIG.

FIG. 17 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a fourth embodiment of the present invention.

FIG. 18 is a diagram showing a step of manufacturing the connector portion of the flexible substrate according to the fourth embodiment of the present invention.

FIG. 19 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a fourth embodiment of the present invention.

FIG. 20 is a diagram showing a process of manufacturing a connector portion of a flexible board according to a fourth embodiment of the present invention.

FIG. 21 is a diagram showing a step of manufacturing the connector portion of the flexible substrate according to the fourth embodiment of the present invention.

FIG. 22 is a diagram showing a step of manufacturing the connector portion of the flexible substrate according to the fourth embodiment of the present invention.

FIG. 23 is a plan view showing a fifth embodiment of the present invention.

FIG. 24 is a perspective view showing a connector portion 81 of a conventional flexible board.

FIG. 25 is a schematic view showing a state where the connector portion 81 of the flexible board is inserted into the insertion hole 91 of the female connector 90.

[Explanation of symbols]

1, 3, 6, 7 Connector part 10, 30, 60, 70 Film 11, 31, 61, 71 Conductor pattern 13, 33, 63, 73 Conductor land part 15, 35, 75 Carbon film 17, 18, 67, 68 , 77, 78 UV curable paint 39 Reinforcing plate 20, 37, 37 ', 37 ", 47, 69, 79 Slit

Claims (4)

[Claims] 1. A plurality of conductors on a synthetic resin film.
A pattern is formed and these multiple
A large area conductor land part that is all connected to the conductor pattern
The step of forming the film and the insulating coating on the back surface side of the surface of the film on which the conductor land portions are provided
A step of applying a thick coating material to cure and pressing the film and the cured insulating coating
The outer shape of the film at the same time
Cut through the body land portion for each conductor pattern.
And a step of providing a slit for dividing
And method for manufacturing connector part of flexible board. 2. A step of forming a plurality of conductor patterns on a synthetic resin film and forming a large-area conductor land portion which is connected to the plurality of conductor patterns at the end thereof, and the film. Reinforcing plate on the back side of the surface where the conductor land of
And a step of attaching the film and the attached reinforcing plate to form an outer shape thereof, and at the same time, a portion of a conductor land portion of the film is penetrated and cut for each of the conductor patterns. A method of manufacturing a connector portion of a flexible substrate, comprising the step of providing a slit for dividing. 3. A step of forming a plurality of conductor patterns on a synthetic resin film and forming a large-area conductor land portion which is connected to the plurality of conductor patterns at an end thereof, and the film. The conductor land portion of each of the conductor patterns
A step of forming a slit penetrating through each of them by pressing, and attaching a reinforcing plate to the back surface side of the slit-formed surface of the film.
A method for manufacturing a connector portion of a flexible substrate, comprising: a step of attaching the flexible board and a step of pressing the film and the reinforcing plate to extract the outer shape thereof . 4. A plurality of conductors on a synthetic resin film.
A pattern is formed and these multiple
A large area conductor land part that is all connected to the conductor pattern
And a step of forming the conductor land portion of the film,
Slits that cut through each and cut by pressing
Insulating paint is applied to the step of providing and the back side of the surface where the slit of the film is provided.
The step of thickly coating and curing , and press-processing the film and the cured insulating coating
And a step of extracting the outer shape.
Method for manufacturing connector part of kisible board.