PORTABLE TERMINAL

• US 20090124294A1
• Filed: 11/07/2008
• Published: 05/14/2009
• Est. Priority Date: 11/12/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Jae-Gon, SONG, Hyun-Seock, KIM, Chang-Il
• Granted Patent: US 8,055,274 B2
• Time in Patent Office: Days
• US Class Current: 455/566
• CPC Class Codes: H04B 1/3838 Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
• CPC Class Codes: H04M 1/03 Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Abstract

Disclosed is a portable terminal capable of enhancing compatibility with a hearing aid. The portable terminal comprises a terminal case having a sound hole thereon; a receiver installed inside the sound hole; and a reflection unit disposed between the terminal case and the receiver, for reflecting an electromagnetic wave radiated from an interior or a surface of the terminal case so as to minimize leakage of the electromagnetic wave to outside of the terminal case.

Claims

1. A portable terminal, comprising:

a terminal case having a sound hole thereon;

a receiver installed inside the sound hole; and

a reflection unit disposed between the terminal case and the receiver, for reflecting an electromagnetic wave radiated from an interior or a surface of the terminal case.

2. The portable terminal of claim 1, wherein the terminal case comprises a conductive layer disposed near the receiver.

3. The portable terminal of claim 2, wherein the reflection unit comprises:

a ground layer disposed inside the conductive layer, and electrically insulated from the conductive layer; and

an impedance layer disposed inside the ground layer and having a parallel configuration of unit cells, wherein each unit cell comprises a capacitance component and an inductance component.

4. The portable terminal of claim 3, wherein the conductive layer is electrically shorted to the impedance layer by at least one connection member.

5. The portable terminal of claim 3, wherein the conductive layer is formed of an Electromagnetic Interference (EMI) spray.

6. The portable terminal of claim 3, wherein the ground layer and the impedance layer are spaced apart by a dielectric material.

7. The portable terminal of claim 3, wherein the impedance layer is formed as any one of Jerusalem cross, Uniplane Compact Photonic BandGap (UC-PBG) and a loop.

8. The portable terminal of claim 3, wherein the reflection unit is formed as any one of Printed Circuit Board (PCB) type, printing type, and in-mold type.

9. The portable terminal of claim 1, wherein the reflection unit is formed on a front portion and a side portion of the terminal case.

10. The portable terminal of claim 1, wherein the reflection unit is configured to form an Artificial Magnetic Conductor (AMC).

11. A portable terminal, comprising:

a terminal body comprising a plurality of cases, and having an antenna therein;

a receiver installed in any one of the plurality of cases so as to be exposed out through the case; and

a shielding unit formed on at least one surface of the plurality of cases, for shielding an electromagnetic wave radiated from the antenna and propagated to the receiver.

12. The portable terminal of claim 11, wherein the shielding unit is configured to have a coverage extending from a region in which the receiver is installed to a neighboring region.

13. The portable terminal of claim 12, further comprising:

a display unit installed inside the plurality of cases; and

a window attached to any one of the plurality of cases such that the window is positioned in front of the display unit, wherein the shielding unit is formed on a region in which the window and the receiver are located.

14. The portable terminal of claim 12, wherein the shielding unit is formed of a conductive material and laminated on at least one surface of the plurality of cases.

15. The portable terminal of claim 14, wherein at least one portion of the conductive material is transparent.

16. The portable terminal of claim 15, wherein the conductive material comprises Indium-Tin Oxide (ITO).

17. The portable terminal of claim 15, wherein the conductive material has a meshed pattern.

18. The portable terminal of claim 17, wherein the meshed pattern comprises a first group of lines and a second group of lines, wherein the second group of lines are substantially perpendicular to the first group of lines.

19. The portable terminal of claim 18, wherein the first group of lines are substantially parallel to a lengthwise direction of the terminal body, and the second group of lines are substantially parallel to a widthwise direction of the terminal body.

20. The portable terminal of claim 12, wherein the shielding unit is located outermost among conducive members installed in the terminal body.

21. The portable terminal of claim 12, wherein the antenna is disposed in one of a first end portion and a second end portion of the terminal body, and

wherein the receiver is not located in the one of a first end portion and a second end portion.