Electronic device

Patent metadata

Field	Value
Publication number	US-9459593-B2
Application number	US-201414180214-A
Country	US
Kind code	B2
Filing date	Feb 13, 2014
Priority date	Feb 15, 2013
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

An electronic device includes a display section, at least one substrate, a control section, a connecting section, a receiving section, and output wiring. The at least one substrate includes a plurality of wiring layers overlapped as a whole. Output wiring is provided on the first layer among the plurality of wiring layers and connects each of the plurality of the output terminals and the control section. From a planar view of the substrate, a bar antenna is attached on a face of a second layer on a side opposite of the first layer, in a position between positions corresponding to positions of the connecting section and the control section. The output wiring crosses between regions corresponding to both edge regions including both edges of the bar antenna.

First claim

What is claimed is:

1. An electronic device comprising:
a display section which executes digital display;
at least one substrate which is positioned below the display section, the at least one substrate comprising one substrate or a plurality of substrates arranged in a thickness direction, the one substrate or the plurality of substrates including a plurality of wiring layers overlapped as a whole;
a control section which is attached to a first layer among the plurality of wiring layers and which controls display of the display section;
a connecting section which is provided on the first layer and in which a plurality of output terminals connected to the display section are arranged;
a receiving section which includes a bar antenna to receive a radio wave, wherein the bar antenna is provided on a surface of the substrate on a side opposite to the display section; and
output wiring which is provided on the first layer and which connects each of the plurality of the output terminals and the control section,
wherein:
from a planar view of the substrate, the bar antenna is attached on a face of a second layer on a side opposite to the first layer, in a position between positions corresponding to positions of the connecting section and the control section, the second layer being a wiring layer of either edge layer of the plurality of wiring layers and which is different from the first layer;
the output wiring connected to the connecting section and the output terminals is provided on the first layer so as not to cross regions corresponding to both edge regions including both edges of the bar antenna and so as to cross between said both edge regions; and
the region between said both edge regions on the second layer is a shielding region provided with a magnetic shielding section.

2. The electronic device according to claim 1 , wherein, from a planar view of the substrate, a non-wiring region where wiring is not provided is provided on all of the wiring layers in a predetermined portion including the region corresponding to said both edge regions.

3. The electronic device according to claim 2 , wherein:
the substrate includes at least three layers of the wiring layer; and
from a planar view of the substrate, a magnetic shielding section is provided in a region corresponding to the shielding region in at least one wiring layer in a wiring layer between the first layer and the second layer.

4. The electronic device according to claim 3 , wherein the shielding region is a grounding region.

5. The electronic device according to claim 4 , wherein, from a planar view of the substrate, the bar antenna is attached to the second layer so as to be orthogonal to the output wiring.

6. The electronic device according to claim 3 , wherein, from a planar view of the substrate, the bar antenna is attached to the second layer so as to be orthogonal to the output wiring.

7. The electronic device according to claim 3 , further comprising a time keeping section which counts present time,
wherein:
the radio wave received by the receiving section is a radio wave including time information,
the control section includes:
a decoding section which obtains time information from the received radio wave; and
a time calibrating section which calibrates the present time counted by the time keeping section based on time information decoded by the decoding section, and

the control section continuously displays the present time on the display section.

8. The electronic device according to claim 2 , wherein the shielding region is a grounding region.

9. The electronic device according to claim 8 , wherein, from a planar view of the substrate, the bar antenna is attached to the second layer so as to be orthogonal to the output wiring.

10. The electronic device according to claim 2 , wherein, from a planar view of the substrate, the bar antenna is attached to the second layer so as to be orthogonal to the output wiring.

11. The electronic device according to claim 2 , further comprising a time keeping section which counts present time,
wherein:
the radio wave received by the receiving section is a radio wave including time information,
the control section includes:
a decoding section which obtains time information from the received radio wave; and
a time calibrating section which calibrates the present time counted by the time keeping section based on time information decoded by the decoding section, and

the control section continuously displays the present time on the display section.

12. The electronic device according to claim 1 , wherein:
the substrate includes at least three layers of the wiring layer; and
from a planar view of the substrate, a magnetic shielding section is provided in a region corresponding to the shielding region in at least one wiring layer in a wiring layer between the first layer and the second layer.

13. The electronic device according to claim 12 , wherein the shielding region is a grounding region.

14. The electronic device according to claim 13 , wherein, from a planar view of the substrate, the bar antenna is attached to the second layer so as to be orthogonal to the output wiring.

15. The electronic device according to claim 12 , wherein, from a planar view of the substrate, the bar antenna is attached to the second layer so as to be orthogonal to the output wiring.

16. The electronic device according to claim 12 , further comprising a time keeping section which counts present time,
wherein:
the radio wave received by the receiving section is a radio wave including time information,
the control section includes:
a decoding section which obtains time information from the received radio wave; and
a time calibrating section which calibrates the present time counted by the time keeping section based on time information decoded by the decoding section, and

the control section continuously displays the present time on the display section.

17. The electronic device according to claim 1 , wherein the shielding region is a grounding region.

18. The electronic device according to claim 17 , wherein, from a planar view of the substrate, the bar antenna is attached to the second layer so as to be orthogonal to the output wiring.

19. The electronic device according to claim 1 , wherein, from a planar view of the substrate, the bar antenna is attached to the second layer so as to be orthogonal to the output wiring.

20. The electronic device according to claim 1 , further comprising a time keeping section which counts present time,
wherein:
the radio wave received by the receiving section is a radio wave including time information,
the control section includes:
a decoding section which obtains time information from the received radio wave; and
a time calibrating section which calibrates the present time counted by the time keeping section based on time information decoded by the decoding section, and

the control section continuously displays the present time on the display section.

21. The electronic device according to claim 1 , further comprising a narrowing section in which an entire width of the output wiring is arranged narrower than a width of the connecting section,
wherein the bar antenna is positioned to cross a portion corresponding to the narrowing section.

Assignees

• Casio Computer Co Ltd

Inventors

• Miwa Jun
• Sano Takashi

Classifications

• G04G9/08

  by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques {(G04G9/0082 takes precedence)} · CPC title

• G04R60/12 Primary

  inside metal cases · CPC title

• G04R20/12 Primary

  Decoding time data; Circuits therefor · CPC title

• G04G17/06

  Electric connectors, e.g. conductive elastomers · CPC title