Electronic device and display unit

Patent metadata

Field	Value
Publication number	US-10455700-B2
Application number	US-201515110734-A
Country	US
Kind code	B2
Filing date	Feb 26, 2015
Priority date	Mar 26, 2014
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

An electronic device includes: a first circuit board on which a first circuit is mounted; a second circuit board on which a second circuit is mounted; a supporter; a flexible flat cable disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting signals between the first circuit and the second circuit. The flexible flat cable is provided with a crease. The flexible flat cable is disposed such that the crease is in contact with the supporter.

First claim

The invention claimed is:

1. An electronic device, comprising:
a first circuit board on which a first circuit is mounted;
a second circuit board on which a second circuit is mounted;
a supporter; and
a flexible flat cable disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting a signal between the first circuit and the second circuit, wherein:
the first circuit board and the second circuit board are mounted on the supporter,
the flexible flat cable is provided with a plurality of creases,
the supporter has a continuous surface at least from a first portion at which one of the plurality of creases closest to the first circuit board is mounted on the supporter to a second portion at which another of the plurality of creases closest to the second circuit board is mounted on the supporter, and
the flexible flat cable is disposed such that the plurality of creases are in contact with the continuous surface of the supporter.

2. The electronic device according to claim 1 , wherein:
the flexible flat cable is disposed such that an interval between adjacent ones of contact portions is smaller than an interval between adjacent ones of the plurality of creases, and
each of the contact portions is a portion where a corresponding crease of the plurality of creases is in contact with the continuous surface of the supporter.

3. The electronic device according to claim 2 , wherein a connecting portion of the flexible flat cable connected to one of the first and second circuit boards is located farther from the continuous surface than contact portions of the plurality of creases to the continuous surface.

4. The electronic device according to claim 1 , wherein:
the flexible flat cable includes a shield surface and a signal surface, and
the plurality of creases are formed such that the shield surface is valley-folded and the signal surface is mountain-folded, the flexible flat cable being disposed such that a portion of the signal surface being mountain-folded is in contact with the continuous surface of the supporter.

5. The electronic device according to claim 1 , wherein an entirety of the flexible flat cable is disposed on the supporter.

6. The electronic device according to claim 1 , wherein the continuous surface is flat.

7. The electronic device according to claim 6 , wherein the continuous surface extends below the first and second circuit boards.

8. The electronic device according to claim 1 , wherein:
each of the plurality of creases is provided with a fold-back which is set to have a predetermined width such that the flexible flat cable has a plurality of fold-backs,
each of the plurality of fold-backs is formed at a corresponding portion of the flexible flat cable being mountain-folded, and
the flexible flat cable is disposed such that the plurality of fold-backs provided to the plurality of creases are discretely in contact with the continuous surface of the supporter.

9. An electronic device, comprising:
a first circuit board on which a first circuit is mounted;
a second circuit board on which a second circuit is mounted;
a supporter; and
a flexible flat cable disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting a signal between the first circuit and the second circuit, wherein:
the first circuit board and the second circuit board are mounted on the supporter,
the flexible flat cable is provided with a plurality of creases,
the supporter has a continuous surface at least from a portion at which one of the plurality of creases closest to the first circuit board is mounted on the supporter to a portion at which another of the plurality of creases closest to the second circuit board is mounted on the supporter,
the flexible flat cable is disposed such that the plurality of creases are in contact with the continuous surface of the supporter, and
the flexible flat cable is disposed such that regions, each of which projects in an arc-shaped manner originating from a corresponding one of the plurality of creases being in contact with the supporter, are formed.

10. A display apparatus, comprising:
a display panel having a display unit displaying an image and a supporter supporting the display unit;
a first circuit board on which a first circuit is mounted;
a second circuit board on which a second circuit is mounted; and
a flexible flat cable disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting a signal between the first circuit and the second circuit, wherein:
the first circuit board and the second circuit board are mounted on the supporter, the flexible flat cable is provided with a plurality of creases,
the supporter has a continuous surface at least from a first portion at which one of the plurality of creases closest to the first circuit board is mounted on the supporter to a second portion at which another of the plurality of creases closest to the second circuit board is mounted on the supporter, and
the flexible flat cable is disposed such that the plurality of creases are in contact with the continuous surface of the supporter.

11. The display apparatus according to claim 10 , wherein an entirety of the flexible flat cable is disposed on the supporter.

12. The display apparatus according to claim 10 , wherein:
the display panel includes a chassis supporting the display unit, and
the supporter is a part of the chassis.

13. The display apparatus according to claim 12 , wherein the chassis is made of metal.

14. The display apparatus according to claim 10 , wherein the continuous surface is flat.

15. The display apparatus according to claim 14 , wherein the continuous surface extends below the first and second circuit boards.

16. The display apparatus according to claim 10 , wherein
each of the plurality of creases is provided with a fold-back which is set to have a predetermined width such that the flexible flat cable has a plurality of fold-backs,
each of the plurality of fold-backs is formed at a corresponding portion of the flexible flat cable being mountain-folded, and
the flexible flat cable is disposed such that the plurality of fold-backs provided to the plurality of creases are discretely in contact with the continuous surface of the supporter.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Sakurai Kazuho
• Kita Hiromu

Classifications

• H05K1/0237 Primary

  High frequency adaptations (H05K1/0216 takes precedence) · CPC title

• H05K2201/055

  Folded back on itself · CPC title

• H05K2201/10128

  Display · CPC title

• H05K3/361

  Assembling flexible printed circuits with other printed circuits · CPC title

• H05K9/0088

  comprising a plurality of shielding layers; combining different shielding material structure · CPC title