Stylus pen

Patent metadata

Field	Value
Publication number	US-2023341953-A1
Application number	US-202318203633-A
Country	US
Kind code	A1
Filing date	May 30, 2023
Priority date	Feb 14, 2019
Publication date	Oct 26, 2023
Grant date	—

Abstract

An exemplary embodiment of the present invention provides a stylus pen including: a body; a conductive tip configured to be exposed from an inside of the body to an outside thereof; and a resonance circuit connected to the conductive tip to resonate an electrical signal transferred from the conductive tip. An inductor unit of the resonance circuit includes a ferrite core and a coil wound in multiple layers over at least a portion of the ferrite core. The ferrite core includes nickel, and the coil can be formed by a litz wire with adjacent winding layers that are wound to be inclined in a zigzag form.

First claim

What is claimed is:

1 . A stylus pen comprising:
a body; a tip configured to be exposed from an inside of the body to an outside of the body; an inductor unit including a ferrite core disposed in the body and a coil wound in multiple layers over at least a portion of the ferrite core; and a capacitor unit disposed in the body to be electrically connected to the inductor unit to form a resonance circuit, and wherein a permittivity of the ferrite core is greater than 0 F/m and less than 1000 F/m.

2 . The stylus pen of claim 1 , wherein the coil has a form where adjacent winding layers are alternately wound.

3 . The stylus pen of claim 1 , wherein
the coil is zigzag wound so that adjacent winding layers are inclined.

4 . The stylus pen of claim 1 , wherein
the ferrite core includes nickel.

5 . The stylus pen of claim 1 , wherein
the coil is a wire covering two or more insulated wires

6 . The stylus pen of claim 5 , wherein
the coil is formed as a litz wire.

7 . The stylus pen of claim 1 , further comprising
a bobbin configured to surround at least a portion of the ferrite core, and the coil is wound on at least a portion of the bobbin. series.

8 . The stylus pen of claim 1 , wherein
the inductor unit includes two or more inductor that are connected in

9 . The stylus pen of claim 1 , wherein
the inductor unit includes a plurality of inductors and the capacitor unit includes a plurality of capacitors, a first resonance circuit includes a first inductor of the plurality of inductors and a first capacitor of the plurality of capacitors, a second resonance circuit includes a second inductor of the plurality of inductors and a second capacitor of the plurality of capacitors, and the first resonance circuit and the second resonance circuit are connected in series.

10 . The stylus pen of claim 1 , further comprising
a blocking member disposed on at least a portion of the inductor unit.

11 . A stylus pen comprising:
a body; a tip configured to be exposed from an inside of the body to an outside of the body; and a resonance circuit disposed in the body, wherein the resonance circuit includes: an inductor unit configured to include a ferrite core disposed in the body and a coil wound in multiple layers over at least a portion of the ferrite core; and a capacitor unit disposed within the body, wherein a permittivity of the ferrite core is greater than 0 F/m and less than 1000 F/m.

12 . The stylus pen of claim 11 , wherein
the ferrite core includes nickel.

13 . The stylus pen of claim 11 , wherein
the coil is a wire covering two or more insulated wires

14 . The stylus pen of claim 13 , wherein
the coil is formed as a litz wire.

15 . The stylus pen of claim 11 , further comprising
a bobbin configured to surround at least a portion of the ferrite core, and the coil is wound on at least a portion of the bobbin.

16 . The stylus pen of claim 11 , wherein the resonance circuit is formed to include two or more inductor and
one capacitor unit connected in series.

17 . The stylus pen of claim 11 , wherein
the resonance circuit includes two or more LC resonance circuits that are connected in series.

18 . The stylus pen of claim 11 , wherein
The coil is zigzag wound so that adjacent winding layers are inclined.

19 . The stylus pen of claim 11 , wherein
the resonance circuit is configured to resonate a signal transferred from an external electrode.

20 . The stylus pen of claim 11 , further comprising
a blocking member disposed on at least a portion of the inductor unit.

Assignees

• Hideep Inc

Inventors

• Kim Seyeob
• Woo Hyoungwook
• Jung Kiryoung
• Kim Bonkee

Classifications

• H01F27/42

  Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils (circuits for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output H02P13/00; impedance networks H03H) · CPC title

• H01F27/2823

  Wires (H01F27/2866 takes precedence) · CPC title

• H01F27/28

  Coils; Windings; Conductive connections · CPC title

• H01F27/24

  Magnetic cores · CPC title

• H01F17/045 Primary

  with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core · CPC title