Touch input device and induction coil thereof
An induction coil of a touch input device provided in the present invention includes a ribbon cable and a coupling device. The ribbon cable is disposed on a plane, and the ribbon cable has a first terminal and a second terminal and has a plurality of wires. The ribbon cable defines a sensing region on the plane by a plurality of bends. The coupling device is utilized to couple the wires at the first terminal and the second terminal such that the wires form a circuit with a plurality of turns wound by a single conducting wire. A touch input device is further provided in the present invention.
1. An induction coil of a touch input device, comprising:
a ribbon cable disposed on a plane, the ribbon cable having a first terminal and a second terminal and having a plurality of wires, the ribbon cable defining a sensing region on the plane by a plurality of bends; and
a coupling device utilized to couple the wires at the first terminal and the second terminal such that the wires form a circuit with a plurality of turns wound by a single conducting wire.
2. The induction coil of claim 1 , wherein the wires are arranged in a single layer in the ribbon cable.
3. The induction coil of claim 1 , wherein the wires are arranged in double or multi layers in the ribbon cable.
4. The induction coil of claim 1 , wherein the ribbon cable has a plurality of bending angles between 45 and 135 degrees.
5. The induction coil of claim 4 , wherein the bending angles is about 90 degrees.
6. The induction coil of claim 1 , wherein each of the bends of the ribbon cable has an overlapping portion.
7. The induction coil of claim 1 , wherein the ribbon cable is a flat flexible cable or flexible printed circuit board.
8. The induction coil of claim 1 , wherein the coupling device is a pair of male and female connectors.
9. The induction coil of claim 1 , wherein the coupling device is a circuit board having a plurality of contacts, which are electrically coupled to the wires.
10. A touch input device for sensing a position and a pressure of an electromagnetic pen on a touchscreen, comprising:
a touch panel utilized to generate a position signal; and
an induction coil disposed around the touch panel to interact with the electromagnetic pen for generating a pressure sensitive signal, the induction coil comprising:
a ribbon cable disposed on a plane, the ribbon cable having a first terminal and a second terminal and having a plurality of wires, the ribbon cable defining a sensing region on the plane by a plurality of bends; and
a coupling device utilized to couple the wires at the first terminal and the second terminal such that the wires form a circuit with a plurality of turns wound by a single conducting wire.
11. The touch input device of claim 10 , wherein the plane is a surface of a liquid crystal display panel.
12. The touch input device of claim 10 , wherein the wires are arranged in a single layer in the ribbon cable.
13. The touch input device of claim 10 , wherein the wires are arranged in double or multi layers in the ribbon cable.
14. The touch input device of claim 10 , wherein the ribbon cable has a plurality of bending angles between 45 and 135 degrees.
15. The touch input device of claim 14 , wherein the bending angles is about 90 degrees.
16. The touch input device of claim 10 , wherein each of the bends of the ribbon cable has an overlapping portion.
17. The touch input device of claim 10 , wherein the ribbon cable is a flat flexible cable or flexible printed circuit board.
18. The touch input device of claim 10 , wherein the coupling device is a pair of male and female connectors.
19. The touch input device of claim 10 , wherein the coupling device is a circuit board having a plurality of contacts, which are electrically coupled to the wires.