3M Anisotropic Conductive Film for Touchscreen Applications
™
Advanced adhesive technology for today’s plastic screens
Electronic devices continue to get smaller, lighter, thinner and faster. They also have dramatically increased functions: watch TV, take a picture,
listen to music, make a phone call, surf the Web or answer e-mails, all on a single device. The serious challenge for product designers is how to
enable the user to access all that functionality with a simple, easy-to-use interface. One solution is the use of touch screens.
3M
™
Anisotropic Conductive Films (ACF) enable designers to use new touch-sensitive display materials like ITO-coated PET. These heat-
bondable, electrically conductive adhesive films consist of a thermoset-thermoplastic adhesive matrix randomly loaded with conductive particles
which allow interconnection of circuit lines through the adhesive thickness, but spaced far enough apart to be electrically insulating in the plane of
the adhesive. Application of heat and pressure causes the adhesive to flow and to bring the circuit pads into contact by trapping the
conductive particles.
The low-temperature and low-pressure cure and short bond time of these adhesives make them the ideal choice for the demanding applications
of flex-to-board, flex-to-flex and flex-to-ITO-coated plastic.
Properties
Application
ACF 7371
ACF 7378
ACF 7371-20
ACF 7376-10
ACF 7376-30
ACF 7379
Flex on Plastic/Glass
Flex-on-board
Touch panel
Camera module
Camera module
Glass
Bonding Bonding Bonding Particle Adhesive Pitch Minimum Connection 90° Peel Temp/Humidity Temp
Aging
Cycling
Temperature Time Pressure Diameter Thickness Minimum Pad Area Resistance Adhesion
(°C)
(sec)
5
10 - 15
7 - 15
7 - 15
10 - 20
(MPa)
1-2
3-4
1-2
1-2
1-2
1-2
(µ)
10
10
20
10
30
10
(µ)
25
40
35
40
45
25
(µ)
(sq mm)
0.2
0.2
0.5
0.1
0.5
0.05
(mOhms)
<100
<100
<20
<20
<20
<3000
(g/cm)
>700
>1000
>600
>900
>700
>700
(°C/%rh)
85/85
85/85
85/85
85/85
85/85
85/85
(°C)
140-170
160-180
140-170
140-160
140-160
160-190
10 - 15
200
200
500
200
500
100
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
Product Selection Guide
Flex Type
Silver Ink on Polyester
Gold/Copper on Polyester
x
x
x
x
x
x
x
Connection Type
Gold/Copper on Polyimide
x
x
x
x
x
x
x
x
Flex to Glass
x
1
x
x
x
x
x
Flex to Plastic Device
x
2
x
x
x
x
Flex to PCB
x
x
x
x
x
Flex to Flex
x
x
x
x
x
x
x
ACF 5363
ACF 7303
ACF 7371
ACF 7378
ACF 7371-20
ACF 7376-10
ACF 7376-30
ACF 7379
1
2
x
x
x
x
x
x
Tested only for silver frit; not suitable for ITO traces.
Suitable for silver ink traces only, not suitable for ITPO traces
Precautionary Information
Refer to Product Label and Material Safety Data Sheet for Health and Safety Information before using this product. For additional health and safety
information, call 1-800-364-3577 or (651) 737-6501.
Important Notice:
Before using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and liability associated with such use.
Warranty; Limited Remedy; Limited Liability:
3M’s product warranty is stated in its Product Literature available upon request. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT
NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective within the warranty period stated above,
your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable
for any indirect, special, incidental or consequential loss or damage arising from this 3M product, regardless of the legal theory asserted.
3
Electronics Markets Materials Division
3M Center, Building 225-3S-06
St. Paul, MN 55144-1000
www.3M.com/electronics
1-800-251-8634
Please recycle. Printed in USA.
© 3M 2011. All rights reserved.
Issued: 3/11 7809HB
60-5002-0280-3
3M is a trademark of 3M Company.
Used under license by 3M subsidiaries and affiliates.
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