Three-wire resistive touch panel and display device using same
An exemplary resistive touch panel includes a top substrate having a first conductive coating thereon, and a bottom substrate comprising a second conductive coating thereon. The first conductive coating includes a plurality of predetermined target points that are electrically connected to form a series circuit, and the series circuit has two terminals. The second conductive coating has a single terminal. A display device employing the resistive touch panel is also provided.
1 . A resistive touch panel comprising:
a top substrate comprising a first conductive coating thereon, the first conductive coating comprising a plurality of predetermined target points that are electrically connected to form a series circuit, the series circuit having two terminals; and
a bottom substrate comprising a second conductive coating thereon, the second conductive coating having a single terminal.
2 . The resistive touch panel of claim 1 , wherein the second conductive coating comprises a planar resistor.
3 . The resistive touch panel of claim 2 , further comprising an analyzing circuit electrically connected to the two terminals of the series circuit of the first conductive coating and the single terminal of the second conductive coating.
4 . The resistive touch panel of claim 3 , wherein the analyzing circuit is capable of applying a voltage to the series circuit, reading a contact voltage of the second conductive coating, and comparing the contact voltage to the applied voltage.
5 . The resistive touch panel of claim 1 , wherein the second conductive coating is substantially the same as the first conductive coating, except that the second conductive coating has only the single terminal.
6 . A display device comprising:
a flat panel display; and
a resistive touch panel adjacent to the flat panel display, the resistive touch panel comprising:
a top substrate comprising a first conductive coating thereon, the first conductive coating comprising a plurality of predetermined target points that are electrically connected to form a series circuit, the series circuit having two terminals; and
a bottom substrate comprising a second conductive coating thereon, the second conductive coating having a single terminal.
7 . The display device of claim 6 , wherein the second conductive coating comprises a planar resistor.
8 . The display device of claim 7 , further comprising an analyzing circuit electrically connected to the two terminals of the series circuit of the first conductive coating and the single terminal of the second conductive coating.
9 . The display device of claim 7 , wherein the analyzing circuit is capable of applying a voltage to the series circuit, reading a contact voltage of the second conductive coating, and comparing the contact voltage to the applied voltage.
10 . The display device of claim 6 , wherein the second conductive coating is substantially the same as the first conductive coating, except that the second conductive coating has only the single terminal.