TOUCH PEN

• US 20120162146A1
• Filed: 12/15/2011
• Published: 06/28/2012
• Est. Priority Date: 12/27/2010
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd., Tsinghua University
• Original Assignee: Hon Hai Precision Industry Co., Ltd., Tsinghua University
• Inventors: JIANG, KAI-LI, FAN, SHOU-SHAN
• Application Number:
  US13/326,730
• Publication Number:
  US 20120162146A1
• Time in Patent Office: Days
• US Class Current: 345/179
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0442 using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser

Abstract

A touch pen includes a body and a head fixed on one end of the body and electrically connected with the body. The head includes a number of carbon nanotubes. The number carbon nanotubes are stacked and crossed with each other, and joined by van der Walls attractive force and form a freestanding structure.

Claims

1. A touch pen comprising:

a body; and

a head fixed on one end of the body and electrically connected with the body, wherein the head comprises a plurality of carbon nanotubes.

2. The touch pen as claimed in claim 1, wherein the head is soft and flexible.

3. The touch pen as claimed in claim 2, wherein the plurality of carbon nanotubes are stacked and crossed with each other and joined by van der Walls attractive force and form a freestanding structure.

4. The touch pen as claimed in claim 3, wherein a plurality of pores is defined between adjacent carbon nanotubes of the plurality of carbon nanotubes.

5. The touch pen as claimed in claim 4, wherein a diameter of the plurality of pores is less than or equal to 10 micrometers.

6. The touch pen as claimed in claim 3, wherein the plurality of carbon nanotubes is multi-walled carbon nanotubes.

7. The touch pen as claimed in claim 1, wherein the body is a tubular structure.

8. The touch pen as claimed in claim 7, wherein the body comprises metal.

9. The touch pen as claimed in claim 1, wherein the one end of the body defines a hole having an internal thread.

10. The touch pen as claimed in claim 9, wherein the head is fixed in the one end of the body and engaged with the internal thread.

11. The touch pen as claimed in claim 1, wherein the head has a Chinese-brush shape.

12. The touch pen as claimed in claim 1, wherein the head has an oil-brush shape.

13. A touch pen comprising:

a body; and

a head fixed on one end of the body and electrically connected with the body, wherein the head is made of a plurality of carbon nanotubes crossed with each other, and joined by van der Walls attractive forces.

14. The touch pen as claimed in claim 13, wherein a plurality of pores is defined between adjacent carbon nanotubes of the plurality of carbon nanotubes.

15. The touch pen as claimed in claim 14, wherein a diameter of the plurality of pores is less than or equal to 10 micrometers.

16. The touch pen as claimed in claim 13, wherein the body comprises metal.

17. The touch pen as claimed in claim 13, wherein the one end of the body defines a hole having an internal thread.

18. The touch pen as claimed in claim 17, wherein the head is fixed on the one end of the body and engaged with the internal thread.

19. The touch pen as claimed in claim 13, wherein the head has a Chinese-brush shape.

20. The touch pen as claimed in claim 13, wherein the head has an oil-brush shape.