MOBILE TERMINAL

• US 20180287246A1
• Filed: 03/22/2016
• Published: 10/04/2018
• Est. Priority Date: 09/25/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Dongjin, SONG, Moonsoo, KIM, Namyong, JEON, Byungeun, HWANG, Kyoungsun, KIM, Changil
• Granted Patent: US 10,665,926 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/46 Electric supply lines or communication lines
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 5/335 at the feed, e.g. for impedance matching
• CPC Class Codes: H01Q 5/378 Combination of fed elements with parasitic elements
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
• CPC Class Codes: H03H 7/38 Impedance-matching networks
• CPC Class Codes: H04M 1/026 Details of the structure or mounting of specific components
• CPC Class Codes: H04M 1/0266 for a display module assembly
• CPC Class Codes: H04M 1/0277 for a printed circuit board assembly
• CPC Class Codes: H05F 1/00 Preventing the formation of electrostatic charges

Abstract

The present invention relates to a mobile terminal which comprises: a display unit; a frame for supporting the display unit; a printed circuit board formed on one side of the frame; a case formed on one side of the printed circuit board; first and second beam-shaped metal members arranged on both sides of the frame while being spaced apart from the frame and exposed to the outside; and a first antenna which is formed adjacent to the frame and implements a first frequency band, wherein the first antenna comprises: a first radiator including at least one end of the first metal member or the second metal member; a first power supply unit for supplying power to the first radiator; and a first ground unit for grounding the first radiator.

Claims

1. A mobile terminal comprising:

a display unit;

a frame supporting the display unit;

a printed circuit board (PCB) formed on one surface of the frame;

a case formed on one surface of the PCB, first and second metal members disposed to be spaced apart from the frame on both sides of the frame, having a beam shape, and exposed to the outside; and

a first antenna formed to be adjacent to the frame and implementing a first frequency band,

wherein the first antenna includes a first radiator including at least one end of the first metal member or the second metal member;

a first power feeder feeding power to the first radiator; and

a first grounding part grounding the first radiator.

2. The mobile terminal of claim 1, wherein

the first antenna further includes:

a varying part provided on the case, formed between the first power feeder and the first radiator, and varying a resonance frequency in the first frequency band.

3. The mobile terminal of claim 2, wherein

the first power feeder includes:

a first power feeding terminal formed on the PCB and electrically connected to one point of the varying part; and

a second power feeding terminal electrically connected to the varying part at one end and electrically connected to the first radiator at the other end.

4. The mobile terminal of claim 3, wherein

the varying part includes at least one conductive member, and when the conductive member is two or more, the conductive members are spaced apart from each other and fed through an indirect power feeding scheme.

5. The mobile terminal of claim 4, wherein

the conductive member includes an open stub which is directly fed or indirectly fed.

6. The mobile terminal of claim 1, wherein

the first or second metal member is grounded by a plurality of contact pins, the plurality of contact pins are formed in a direction away from the first power feeder based on the first grounding part and are spaced apart from each other at an interval smaller than ¼

times a wavelength (λ

₁) corresponding to a center frequency (f1) of the first frequency band.

7. The mobile terminal of claim 6, wherein

the contact pin includes a first contact pin electrically connecting the first or second metal member to the PCB.

8. The mobile terminal of claim 6, wherein

the contact pin includes a second contact pin electrically connecting the first or second metal member to the frame.

9. The mobile terminal of claim 1, wherein

a fastening portion coupled to the frame is provided at an end of the first radiator, and an extending pattern portion is formed in the fastening portion.

10. The mobile terminal of claim 6, wherein

an anti-electric shock device is connected to at least one of the first power feeder, the first grounding part, and the contact pin.

11. The mobile terminal of claim 7, wherein

the first contact pin is in contact with an upper surface or a lower surface of the PCB.

12. The mobile terminal of claim 11, wherein

when the first contact pin is in contact with the lower surface of the PCB, a portion of the frame is cut away such that the PCB protrudes outwards, relative to the frame.

13. The mobile terminal of claim 1, wherein

the first antenna is formed at an upper end of the first metal member,

a second antenna implementing a second frequency band different from the frequency band of the first antenna is provided at an upper end of the second metal member, and

the second antenna includes:

a second radiator including an upper end of the second metal member and implementing the second frequency band;

a second power feeder feeding power to the second radiator; and

a second grounding part grounding the second radiator.

14. The mobile terminal of claim 13, wherein

the second metal member is grounded by a plurality of contact pins, and the plurality of contact pins are formed in a direction away from the second power feeder based on the second grounding part and are spaced apart from each other at an interval smaller than ¼

times a wavelength (λ

₂) corresponding to a center frequency (f2) of the second frequency band.

15. The mobile terminal of claim 13, wherein

a third antenna implementing a third frequency band is provided at a lower end of the second metal member, and

the third antenna includes:

a third radiator including the lower end of the second metal member and implementing a third frequency band;

a third power feeder feeding power to the third radiator; and

a third grounding part grounding the third radiator.

16. The mobile terminal of claim 15, wherein

the second metal member is grounded by a plurality of contact pins, and the plurality of contact pins are formed in a direction away from the third power feeder based on the third grounding part and are spaced apart from each other at an interval smaller than ¼

times a wavelength (λ

₃) corresponding to a center frequency (f2) of the third frequency band.

17. The mobile terminal of claim 1, further comprising:

a fourth antenna provided on an upper side of the frame,

wherein the fourth antenna includes;

a first pattern portion formed on an upper end surface of the frame; and

a second pattern portion formed on the case,

wherein the first and second pattern portions are electrically connected and a fourth power feeder and a fourth grounding part are formed on the first and second pattern portions.

18. The mobile terminal of claim 1, further comprising:

a fifth antenna provided on a lower side of the frame,

wherein the fifth antenna includes;

a third pattern portion formed on a lower end surface of the frame; and

a fourth pattern portion formed on a speaker module disposed on the same plane as the case,

wherein the third and fourth pattern portions are electrically connected and a fifth feeder and a fifth grounding part are formed on the third and fourth pattern portions.

19. The mobile terminal of claim 13, wherein

the second antenna further includes:

a varying part provided on the case, formed between the second power

feeder and the second radiator, and varying a resonance frequency in a second frequency band.

20. The mobile terminal of claim 15, wherein

the third antenna further includes:

a varying part provided on the case, formed between the third power feeder and the third radiator, and varying a resonance frequency in a third frequency band.