Touch panel spacer dots and methods of making
First Claim
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1. A method for making a touch activated user input device comprising the steps of:
- providing a first substrate comprising a first conductive coating;
ink jet printing a plurality of dots on the first conductive coating, each of the dots including nanoparticles;
hardening the dots to form spacers adhered to the first substrate; and
placing a second substrate comprising a second conductive coating over the first substrate such that the spacers maintain a distance between the first and second substrates to prevent detection of a touch location when no external force is applied and allow detection of a localized touch location when a sufficient localized external force is applied between the first and second substrates.
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Abstract
The present invention provides touch panels and touch panel substrates that include spacer dots comprising a nanocomposite material. The present invention also provides methods of ink jet printing spacer dots for touch panel applications. The spacer dots and methods of making spacer dots can lead to spacers that have good durability, have controllable sizes, shapes, and spacings, and have desirable optical properties.
37 Citations
23 Claims
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1. A method for making a touch activated user input device comprising the steps of:
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providing a first substrate comprising a first conductive coating; ink jet printing a plurality of dots on the first conductive coating, each of the dots including nanoparticles; hardening the dots to form spacers adhered to the first substrate; and placing a second substrate comprising a second conductive coating over the first substrate such that the spacers maintain a distance between the first and second substrates to prevent detection of a touch location when no external force is applied and allow detection of a localized touch location when a sufficient localized external force is applied between the first and second substrates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for making a touch activated user input device comprising the steps of;
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providing a first substrate comprising a first conductive coating; ink jet printing a gel composition to define a plurality of dots on the first conductive coating; hardening the dots to form spaces adhered to the first substrate; and placing a second substrate comprising a second conductive coating over the first substrate such that the spacers maintain a distance between the first and second substrates to prevent detection of a touch location when no external force is applied and allow detection of a localized touch location when a sufficient localized external force is applied between the first and second substrates. - View Dependent Claims (20, 21, 22, 23)
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Specification