Input device

Patent metadata

Field	Value
Publication number	US-9626038-B2
Application number	US-201514677598-A
Country	US
Kind code	B2
Filing date	Apr 2, 2015
Priority date	Jul 11, 2011
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

An apparatus is provided that includes an electromagnetic sensing unit to sense an electromagnetic field. The apparatus also includes a shielding layer to shield at least a portion of the electromagnetic field, the shielding layer including a magnetic material.

First claim

What is claimed is:

1. An apparatus comprising:
an electromagnetic sensing unit to sense an electromagnetic field;
a shielding layer disposed under the electromagnetic sensing unit to shield at least a portion of the electromagnetic field, the shielding layer including a magnetic material; and
a geomagnetic sensor disposed under at least a portion of the shielding layer to sense geomagnetic field.

2. The apparatus of claim 1 , further comprising:
a display operatively coupled with the apparatus, the display being disposed over the electromagnetic sensing unit.

3. The apparatus of claim 1 , wherein the magnetic material comprises a permeability characteristic being maintained at a specified range between a zero frequency band and an operating frequency band to be received or transmitted using the electromagnetic sensing unit.

4. The apparatus of claim 1 , wherein the magnetic material comprises powder.

5. The apparatus of claim 1 , wherein the magnetic material comprises at least one of ferrite, MolyPermalloy material, Fe—Si—Al-based material (Sandust), or Ni—Fe-based material (Highflux).

6. The apparatus of claim 1 , wherein the shielding layer comprises a mixture of at least the magnetic material and an adhesive material.

7. The apparatus of claim 1 , wherein the shielding layer is formed by being spread onto a bottom surface of the electromagnetic sensing unit.

8. The apparatus of claim 1 , wherein the shielding layer is formed at least from an adhesive film on which the magnetic material is coated.

9. The apparatus of claim 1 , wherein the electromagnetic field comprises an input signal generated by an electronic device external to the apparatus.

10. An apparatus comprising:
an electromagnetic sensing unit to sense an electromagnetic field generated by an electronic device external to the apparatus;
a shielding layer disposed under the electromagnetic sensing unit to shield at least a portion of the electromagnetic field, at least one portion of the shielding layer including a magnetic material; and
a geomagnetic sensor disposed under at least a portion of the shielding layer to sense geomagnetic field.

11. The apparatus of claim 10 , wherein the magnetic material comprises a permeability characteristic being maintained at a specified range between a zero frequency band and an operating frequency band to be received or transmitted using the electromagnetic sensing unit.

12. The apparatus of claim 10 , wherein the electromagnetic sensing unit comprises an electromagnetic resonance sensor.

13. The apparatus of claim 10 , wherein the electromagnetic sensing unit is configured to detect a position of the electronic device.

14. The apparatus of claim 10 , wherein the electronic device comprises an electromagnetic pen.

15. An apparatus comprising:
an electromagnetic sensing unit to sense an electromagnetic field;
a shielding layer disposed under the electromagnetic sensing unit, the shielding layer including a material having a permeability characteristic, the permeability characteristic being maintained at a specified range between a first specified frequency band and a second specified frequency band; and
a geomagnetic sensor disposed under at least a portion of the shielding layer to sense geomagnetic field.

16. The apparatus of claim 15 , wherein the first specified frequency band comprises a zero frequency band.

17. The apparatus of claim 15 , wherein the second specified frequency band comprises an operating frequency band to receive or transmit a signal using the electromagnetic sensing unit.

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Lee Yu-Sheop
• Lee Joo-Hoon
• Jung Sun-Tae

Classifications

• H01F1/047

  Alloys characterised by their composition · CPC title

• G06F3/046

  by electromagnetic means · CPC title

• G06F3/03545 Primary

  Pens or stylus · CPC title

• G01V3/40

  specially adapted for measuring magnetic field characteristics of the earth · CPC title

• H01F1/401

  diluted · CPC title