Capacitive stylus with two transmit electrodes

1. A capacitive stylus with two transmit electrodes, comprising:

a circuit board with a circuit thereon;

a first transmit electrode comprising a conductive nib, a nib holder and a conductive spring, wherein a portion of the conductive nib is in the nib holder, and the conductive spring electrically connects the conductive nib and the nib holder to the circuit;

a second transmit electrode comprising a second transmit electrode ring and a second transmit electrode line, wherein the second transmit electrode line electrically connects the second transmit electrode ring to the circuit, the second transmit electrode ring surrounds one end of the first transmit electrode opposite to a tip of the conductive nib; and

a first transmit electrode shield, wherein the first transmit electrode shield surrounds the nib holder and is configured to be located between the first transmit electrode and the second transmit electrode, the first transmit electrode shield sheaths the first transmit electrode to shield the first transmit electrode so that only a portion of the first transmit electrode adjacent the tip of the conductive nib is exposed and the portion of the first transmit electrode and the second transmit electrode ring is spaced with a distance.

2. The capacitive stylus according to claim 1 further comprising a first frame and a second frame being configured to combine, surround and secure the circuit board, the nib holder and the first transmit electrode shield, wherein the second transmit electrode ring is outside the first and second frames.

3. The capacitive stylus according to claim 2 , wherein the first transmit electrode shield is outside the first and second frames.

4. The capacitive stylus according to claim 2 further comprising a first rear shield and a second rear shield, wherein the first rear shield and the second rear shield surround the circuit board the first and second frame.

5. The capacitive stylus according to claim 4 further comprising a first transmit electrode ground line, wherein the first transmit electrode ground line connects the first transmit electrode shield to the second rear shield.

6. The capacitive stylus according to claim 1 , wherein the conductive spring surrounds one end of the nib holder opposite to the tip of the conductive nib.

7. A capacitive stylus with two transmit electrodes, comprising:

a circuit board with a circuit thereon;

a first transmit electrode comprising a conductive nib, a nib holder and a conductive spring, wherein a portion of the conductive nib is in the nib holder, and the conductive spring electrically connects the conductive nib and the nib holder to the circuit;

a second transmit electrode comprising a second transmit electrode ring and a second transmit electrode line, wherein the second transmit electrode line electrically connects the second transmit electrode ring to the circuit, the second transmit electrode ring surrounds a first end of the first transmit electrode opposite to a tip of the conductive nib;

a first transmit electrode shield, wherein the first transmit electrode shield surrounds portions of the conductive nib, the nib holder and the conductive spring to shield the first transmit electrode so that only a second end of the first transmit electrode adjacent the tip of the conductive nib is exposed, and the second end of the first transmit electrode and the second transmit electrode ring is spaced with a distance; and

an insulation shield covering the first transmit electrode shield, wherein the insulation shield and the first transmit electrode shield are configured to be located between the first transmit electrode and the second transmit electrode, the second transmit electrode surrounds portions of the insulation shield and the first transmit electrode shield.

8. The capacitive stylus according to claim 7 further comprising a first frame and a second frame being configured to combine, surround and secure the circuit board, the nib holder and the conductive spring, and the insulation shield, wherein the first transmit electrode shield and the second transmit electrode ring are outside the first and second frames.

9. The capacitive stylus according to claim 8 further comprising a first rear shield and a second rear shield, wherein the first rear shield and the second rear shield surround the circuit board the first frame and second frame.

10. The capacitive stylus according to claim 7 , wherein the conductive spring surrounds one end of the nib holder opposite to the tip of the conductive nib.

11. The capacitive stylus according to claim 7 , wherein the first transmit electrode shield and the conductive spring surround the nib holder.