Method of manufacturing touch sensors
First Claim
1. A method comprising:
- forming a touch sensor on a sheet of base film, the touch sensor comprising one or more bond pads including a first bond pad and a second bond pad formed on the base film, said first and second bond pads connecting to conductive traces at a first side of the touch sensor;
forming a first shorting bar coupling together two or more contacts of the first bond pad at the first side of the touch sensor;
forming a second shorting bar coupling together two or more contacts of the second bond pad at the first side of the touch sensor, wherein the second shorting bar is disconnected from the first shorting bar while the first shorting bar is coupling together two or more contacts of the first bond pad and the second shorting bar is coupling together two or more contacts of the second bond pad; and
removing the touch sensor from the sheet of base film; and
thereafter separating, the touch sensor from the first shorting bar and the second shorting bar.
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Accused Products
Abstract
Roll-to-roll processes for manufacturing touch sensors on a plastic base film are provided. The touch sensors can be deposited on the base film using various patterning techniques. One or more shorting bars can also be patterned onto the base film to couple together traces, such as drive lines, sense lines, conductive traces, and the like, of the touch sensor to prevent a potential difference from forming between traces due to static buildup during the manufacturing process. After the touch sensor is fully formed on the base film, the touch sensor can be removed from the base film using lithography or a physical cutting process. The removal process can separate the touch sensor from the one or more shorting bars, thereby uncoupling the traces of the touch sensor.
22 Citations
12 Claims
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1. A method comprising:
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forming a touch sensor on a sheet of base film, the touch sensor comprising one or more bond pads including a first bond pad and a second bond pad formed on the base film, said first and second bond pads connecting to conductive traces at a first side of the touch sensor; forming a first shorting bar coupling together two or more contacts of the first bond pad at the first side of the touch sensor; forming a second shorting bar coupling together two or more contacts of the second bond pad at the first side of the touch sensor, wherein the second shorting bar is disconnected from the first shorting bar while the first shorting bar is coupling together two or more contacts of the first bond pad and the second shorting bar is coupling together two or more contacts of the second bond pad; and removing the touch sensor from the sheet of base film; and
thereafter separating, the touch sensor from the first shorting bar and the second shorting bar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification