TOUCH PEN FOR DIRECT INFORMATION INPUT

• US 20130285990A1
• Filed: 03/18/2013
• Published: 10/31/2013
• Est. Priority Date: 03/22/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Myeong-Sil, Park, Sung-Soo
• Granted Patent: US 9,158,392 B2
• Time in Patent Office: Days
• US Class Current: 345/179
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

Disclosed is a touch pen that is configured such that an indication point, which is indicated on a touch panel when the touch pen slantingly contacts the touch panel, is corrected to a contact point of the touch pen.

Claims

1. A touch pen, wherein the touch pen is configured such that an indication point, which is indicated on a touch panel when the touch pen slantingly contacts the touch panel, is corrected to a contact point of the touch pen.

2. The touch pen of claim 1, wherein the indication point is indicated on a central axis of an electromagnetic field which is produced when the touch pen contacts the touch panel.

3. The touch pen of claim 2, wherein the touch pen comprises:

a body;

a ferrite core positioned inside of the body; and

a coil wound around the outer periphery of the coil,

wherein the ferrite core is formed asymmetrically to be off-center in relation to a first direction where the touch pen is slanted from the central axis of the body to approach the touch panel.

4. The touch pen of claim 3, wherein the ferrite core comprises:

a first body part formed symmetrically with reference to the central axis of the body; and

a second body integrally provided at an end of the first body part, and biased to the first direction.

5. The touch pen of claim 4, wherein the second body part is formed in a tapered manner relative to the first direction.

6. The touch pen of claim 4, wherein the second body part is formed at the end of the first body part in a stepped manner relative to the first direction.

7. The touch pen of claim 3, wherein the outer periphery of the body is provided with an indication unit that is configured to indicate an off-centered direction of the ferrite core.

8. The touch pen of claim 7, wherein the indication unit comprises a button protruding from the outer periphery of the body.

9. The touch pen of claim 2, wherein the touch pen comprises:

a body;

a ferrite symmetrically disposed inside of the body;

a coil wound around the outer periphery of the ferrite core; and

a conductive member positioned adjacent to the ferrite core in the first direction where the touch pen approaches the touch panel.

10. The touch pen of claim 9, wherein the outer periphery of the body is provided with an indication unit that is configured to indicate an off-centered direction of the ferrite core.

11. The touch pen of claim 3, wherein when the touch pen vertically contacts the touch panel, the central axis of the electromagnetic field is produced to be spaced away from the contact point to a direction opposite to the first direction where the touch pen is slanted to approach the touch panel, and

wherein when the touch pen slantingly contacts the touch panel, the central axis of the electromagnetic field is indicated to be engaged with the contact point.

12. The touch pen of claim 11, wherein when the touch pen is arranged vertically in relation to the touch panel, the central axis of the electromagnetic field is spaced from the indication point by 0.5 millimeters to 1.0 millimeters, and

wherein when the touch pen is arranged slantingly at a slanting angle of 30 degrees to 60 degrees in relation to the touch panel, the indication point and the central axis of the electromagnetic field conform to each other.