Portable Electronic Apparatus

• US 20090046020A1
• Filed: 04/27/2005
• Published: 02/19/2009
• Est. Priority Date: 06/03/2004
• Status: Active Grant

• Current Assignee: Seiko Instruments Incorporated (Seiko Group)
• Original Assignee: Seiko Instruments Incorporated (Seiko Group)
• Inventors: Kato, Kazuo, Moriya, Koichi, Miyahara, Shinichiro
• Granted Patent: US 7,692,591 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/273 Adaptation for carrying or wearing by persons or animals
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142

Abstract

A portable electronic apparatus has a main body case in which are disposed a display panel, a circuit board, and a dielectric antenna. The dielectric antenna is disposed at a vicinity of a peripheral edge portion of the circuit board.

Claims

1. A portable electronic apparatus comprising:

a main body case;

a display panel disposed in the main body case;

a circuit board disposed in the main body case; and

a dielectric antenna disposed in the main body case and at a vicinity of a peripheral edge portion of the circuit board.

2. A portable electronic apparatus according to claim 1;

wherein the display panel overlaps the circuit board, and the dielectric antenna is disposed between the display panel and the circuit board.

30. A portable electronic apparatus according to claim 2;

wherein a wiring region of the circuit board is formed with a wiring pattern disposed so as to not overlap the dielectric antenna, an end side of the wiring region and an end side of the dielectric antenna being disposed proximate one other.

31. A portable electronic apparatus according to claim 1;

wherein a wiring region of the circuit board is formed with a wiring pattern disposed so as to not overlap the dielectric antenna, an end side of the wiring region and an end side of the dielectric antenna being disposed proximate one other.

32. A portable electronic apparatus according to claim 1;

wherein the dielectric antenna comprises a ceramic element member having a rectangular parallelepiped shape and comprising at least one dielectric layer an antenna element comprising a dielectric member having a strip-like shape and disposed at the dielectric layer and a plurality of terminals disposed at an outer surface of the ceramic element member, the plurality of terminals comprising a feed terminal connected to a feed point of the antenna element and a ground terminal connected to a ground point of the antenna element;

wherein one end of the dielectric member forms an open end which does not constitute the feed point and the ground point.

33. A portable electronic apparatus according to claim 32;

wherein the antenna element comprises an inverse F-type antenna.

34. A portable electronic apparatus according to claim 1;

wherein the circuit board has a wiring region comprising a wiring pattern that is not disposed at a region corresponding to an open end of the dielectric antenna.

35. A portable electronic apparatus according to claim 34;

wherein an inner layer of the circuit board has a conductive film overlapping substantially the entire wiring region of the circuit board.

36. A portable electronic apparatus according to claim 35;

wherein the conductive film comprises a ground of the circuit board.

37. A portable electronic apparatus according to claim 35;

wherein the conductive film does not overlap the dielectric antenna.

38. A portable electronic apparatus according to claim 1;

wherein the circuit board has at least an information processing circuit for processing information, and a transmitting/receiving circuit for inputting/outputting a signal to and from the information processing circuit and inputting/outputting a wireless signal to and from the dielectric antenna, the transmitting/receiving circuit being disposed between the information processing circuit and the dielectric antenna.

39. A portable electronic apparatus according to claim 38;

wherein the transmitting/receiving circuit operates to input/output a signal by wireless communication utilizing a radio wave of a frequency band which a user can freely use without a license.

40. A portable electronic apparatus according to claim 1;

further comprising a battery disposed in the main body case at a position which does no overlap the dielectric antenna.

41. A portable electronic apparatus according to claim 40;

wherein the battery overlaps the conductive film.

42. A portable electronic apparatus according to claim 40;

wherein the battery is disposed on a side opposite to a side of a surface of the circuit board provided with the dielectric antenna.

43. A portable electronic apparatus according to claim 1;

further comprising a piezoelectric buzzer disposed in the main body case at a position which does not overlap the dielectric antenna.

44. A portable electronic apparatus according to claim 43;

wherein the piezoelectric buzzer overlaps the conductive film.

45. A portable electronic apparatus according to claim 43;

wherein the piezoelectric buzzer is disposed on a side opposite to a side of a surface of the circuit board provided with the dielectric antenna.

46. A portable electronic apparatus according to claim 1;

wherein the circuit board comprises a printed circuit plate including a plate member comprising an insulating material, a conductive pattern disposed at an exposed surface or inside of the plate member, and an electronic part mounted to the exposed surface of the plate member.

47. A portable electronic apparatus according to claim 1;

wherein the display panel comprises one of a liquid crystal display panel, an organic electro-luminescence display panel, and a plasma display panel.

48. A portable electronic apparatus according to claim 1;

wherein the display panel comprises a liquid crystal display portion, a backlight portion for irradiating light to the liquid crystal display portion, and a shield plate disposed at the backlight portion at a region which does not overlap at least the dielectric antenna.

49. A portable electronic apparatus according to claim 1;

wherein the portable electronic apparatus comprises a wristwatch.

50. A portable electronic apparatus according to claim 49;

further including adjusting means for adjusting a frequency characteristic of the dielectric antenna to a preselected value.

3-29. -29. (canceled)

51. A portable electronic apparatus comprising:

a main body case;

a display panel disposed in the main body case;

a circuit board disposed in the main body case, the circuit board having a wiring pattern and a conductive film overlapping substantially the entire wiring pattern; and

a dielectric antenna disposed in the main body case and at a vicinity of a peripheral edge portion of the circuit board so that the wiring pattern does not overlap the dielectric antenna.

52. A portable electronic apparatus according to claim 51;

wherein the dielectric antenna comprises a ceramic element member having a rectangular parallelepiped shape and comprising at least one dielectric layer, an antenna element comprising a dielectric member having a strip-like shape and disposed at the dielectric layer, and a plurality of terminals disposed at an outer surface of the ceramic element member, the plurality of terminals comprising a feed terminal connected to a feed point of the antenna element and a ground terminal connected to a ground point of the antenna element;

wherein one end of the dielectric member forms an open end which does not constitute the feed point and the ground point.

53. A portable electronic apparatus according to claim 52;

wherein the feed terminal of the dielectric antenna is disposed at one side surface in a longitudinal direction of the ceramic element member; and

wherein a portion of a peripheral edge portion of the conductive film of the circuit board is formed to be in line with one side surface of the dielectric antenna.

54. A portable electronic apparatus according to claim 53;

wherein the portion of the peripheral edge portion of the conductive film has a linear shape.

55. A portable electronic apparatus according to claim 54;

wherein the conductive film of the circuit board is electrically connected to the ground terminal of the dielectric antenna.

56. A portable electronic apparatus comprising:

a main body case;

a display panel disposed in the main body case;

a dielectric antenna disposed in the main body case;

a circuit board disposed in the main body case so that the dielectric antenna is disposed at a vicinity of a peripheral edge portion of the circuit board, the circuit board having at least an information processing circuit for processing information, and a transmitting/receiving circuit for inputting/outputting a signal to and from the information processing circuit and inputting/outputting a wireless signal to and from the dielectric antenna, the transmitting/receiving circuit being disposed between the information processing circuit and the dielectric antenna;

a switch; and

a pair of electrodes comprising a switch electrode and a ground electrode disposed at the circuit board for connecting a switch signal outputted from the switch to the information processing circuit, the ground electrode being connected to a ground portion of the circuit board, and the switch electrode and the ground electrode being disposed at vicinities of the dielectric antenna so that the ground electrode is disposed closer to the dielectric antenna than the switch electrode.

57. A portable electronic apparatus according to claim 56;

wherein the main body case comprises an openable/closable lid portion; and

further comprising an inspection connector having a terminal electrically connected to an output end of the transmitting/receiving circuit and mounted on a surface of the circuit board disposed opposite to the lid portion.