JP2002064604A - Folding portable telephone terminal - Google Patents

Folding portable telephone terminal

Info

Publication number
JP2002064604A
JP2002064604A JP2000251419A JP2000251419A JP2002064604A JP 2002064604 A JP2002064604 A JP 2002064604A JP 2000251419 A JP2000251419 A JP 2000251419A JP 2000251419 A JP2000251419 A JP 2000251419A JP 2002064604 A JP2002064604 A JP 2002064604A
Authority
JP
Japan
Prior art keywords
printed circuit
flexible printed
circuit board
spiral
hinge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2000251419A
Other languages
Japanese (ja)
Other versions
JP3717769B2 (en
Inventor
Tomotake Kamiyama
知毅 上山
Jiro Ozaki
次郎 尾崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Tottori Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Sanyo Electric Co Ltd, Tottori Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP2000251419A priority Critical patent/JP3717769B2/en
Publication of JP2002064604A publication Critical patent/JP2002064604A/en
Application granted granted Critical
Publication of JP3717769B2 publication Critical patent/JP3717769B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Telephone Set Structure (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

PROBLEM TO BE SOLVED: To enable flexible printed boards which are used as stacked up to be improved in open-close durability. SOLUTION: Flexible boards 4 and 5 are stacked up and disposed in spiral inside a hinge 3, and a gap is provided between the flexible boards 4 and 5 respectively when a first case 14 and a second case 24 are closed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は複数のフレキシブルプリ
ント基板がヒンジ部で螺旋している折畳式携帯電話端末
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable portable telephone terminal in which a plurality of flexible printed circuit boards are spirally wound at hinge portions.

【0002】[0002]

【従来の技術】現在、折畳式携帯電話機や折畳式PHS
(Personal Handyphone Syst
em)が市販されている。この折畳式の端末は、受話部
と送話部の2つの回転体をヒンジ部で回動可能に結合し
ており、このヒンジ部内には受話部と送話部を電気的に
接続するフレキシブルプリント基板が通っている。ヒン
ジ部内のフレキシブルプリント基板は、開閉による断線
等の損傷を防止するために、螺旋状に巻かれている(特
開平1−89845号公報参照)。
2. Description of the Related Art At present, foldable portable telephones and foldable PHSs are known.
(Personal Handyphone System
em) is commercially available. In this folding terminal, two rotating bodies, a receiving unit and a transmitting unit, are rotatably connected by a hinge, and a flexible connecting unit electrically connects the receiving unit and the transmitting unit in the hinge. Printed circuit board is passing. The flexible printed circuit board in the hinge portion is spirally wound in order to prevent damage such as disconnection due to opening and closing (see JP-A-1-89845).

【0003】[0003]

【発明が解決しようとする課題】しかし、携帯電話機の
機能向上により、フレキシブルプリント基板に納めなけ
ればならない導線の本数は増加する一方である。これに
より、フレキシブルプリント基板の幅は折畳式の端末に
対する許容幅を超えるようになった。
However, as the functions of mobile phones have been improved, the number of conductors that must be accommodated on a flexible printed circuit board is increasing. As a result, the width of the flexible printed circuit board exceeds the allowable width for a foldable terminal.

【0004】これを解決する方法として、フレキシブル
プリント基板を多層にする方法が考えられるが、多層の
フレキシブルプリント基板は、曲げにより外側の導線に
大きな張力が加わるために片面に比べて開閉の耐久性が
低下する。
To solve this problem, a method of forming a flexible printed circuit board into multiple layers is conceivable. However, the multilayer flexible printed circuit board has a larger opening / closing durability than a single side because a large tension is applied to the outer conductor by bending. Decrease.

【0005】そこで、導線が単層のフレキシブルプリン
ト基板を複数重ねてヒンジ部を通すことが考えられる
が、この場合は、曲げることにより螺旋の半径が小さく
なるために、フレキシブルプリント基板の摩擦が大きく
なるという問題が生じる。図5は摩擦が極度に大きくな
る場合を示す側面図である。携帯電話端末を閉じること
により、内外のフレキシブルプリント基板(4)(5)
の螺旋が小さくなる。後述の理由により、外側のフレキ
シブルプリント基板(5)の螺旋の方が、内側のフレキ
シブルプリント基板(4)より小さくなるために、内側
のフレキシブルプリント基板(4)の螺旋でない部分
(42)(43)が変形する程圧縮される。すると、そ
の反力により両フレキシブルプリント基板(4)(5)
の螺旋部の摩擦力が極度に大きくなる。
In view of this, it is conceivable that the conductive wire passes through the hinge portion by stacking a plurality of single-layer flexible printed circuit boards. In this case, since the radius of the spiral becomes small by bending, the friction of the flexible printed circuit board increases. Problem arises. FIG. 5 is a side view showing a case where the friction becomes extremely large. By closing the mobile phone terminal, the inner and outer flexible printed circuit boards (4) (5)
Spiral becomes smaller. For reasons to be described later, since the spiral of the outer flexible printed board (5) is smaller than the spiral of the inner flexible printed board (4), the non-spiral portions (42) (43) of the inner flexible printed board (4) are formed. ) Is compressed as it is deformed. Then, due to the reaction force, both flexible printed circuit boards (4) and (5)
The frictional force of the spiral portion becomes extremely large.

【0006】[0006]

【課題を解決するための手段】本発明の折畳式携帯電話
端末はかかる点に鑑みなされたもので、ヒンジを介して
開閉可能に設けられた第1、第2の筐体と、ヒンジ部を
介して第1の筐体から第2の筐体に渡って配設される複
数のフレキシブルプリント基板とを備え、前記ヒンジ部
内に於いて、前記複数のフレキシブル基板を重ねて螺旋
状に配設し、且つ前記第1、第2の筐体を閉じたときヒ
ンジ部に於けるフレキシブル基板の夫々の間に隙間を設
ける。
SUMMARY OF THE INVENTION In view of the foregoing, a foldable portable telephone terminal according to the present invention is provided with first and second housings which can be opened and closed via a hinge, and a hinge portion. And a plurality of flexible printed circuit boards arranged from the first case to the second case via a plurality of flexible printed circuit boards. When the first and second housings are closed, a gap is provided between each of the flexible substrates at the hinge portion.

【0007】また、前記ヒンジ部内に於いて、前記複数
のフレキシブル基板を重ねて螺旋状に配設し、且つ前記
第1、第2の筐体を閉じたとき外側のフレキシブルプリ
ント基板の内面の平均半径がその内側のフレキシブルプ
リント基板の外面の平均半径より所定寸法以上大きくな
るようにした。
Further, in the hinge portion, the plurality of flexible substrates are spirally arranged one on top of another, and the average of the inner surface of the outer flexible printed circuit board when the first and second housings are closed. The radius was set to be larger than the average radius of the outer surface of the flexible printed circuit board by a predetermined dimension or more.

【0008】[0008]

【発明の実施の形態】本発明の実施例の形態を図に基づ
き説明する。図1はフレキシブルプリント基板(1)を
携帯電話端末の筐体に組み込む前の状態を示す部分透過
斜視図であり、図2は組み込んだ後の状態を示す部分透
過斜視図である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially transparent perspective view showing a state before the flexible printed circuit board (1) is assembled into the housing of the mobile phone terminal, and FIG. 2 is a partially transparent perspective view showing the state after the flexible printed circuit board (1) is assembled.

【0009】本実施例の携帯電話端末は受話部(1)
と、送話部(2)と、ヒンジ部(3)を備えた折畳式で
ある。
The portable telephone terminal according to the present embodiment has a receiver (1).
And a foldable type provided with a transmission section (2) and a hinge section (3).

【0010】受話部(1)のプリント基板(11)と送
話部(2)のプリント基板(21)は上下に重なった第
1、第2のフレキシブルプリント基板(4)(5)によ
り電気的に接続される。この接続はロック機構付コネク
タ(12)(13)(22)(23)により行われ、第
1、第2のフレキシブルプリント基板(4)(5)の接
続が容易に外れないようになっている。
The printed circuit board (11) of the receiving section (1) and the printed circuit board (21) of the transmitting section (2) are electrically connected to each other by first and second flexible printed circuit boards (4) and (5) which are vertically overlapped. Connected to. This connection is performed by the connectors with lock mechanisms (12) (13) (22) (23) so that the connection of the first and second flexible printed circuit boards (4) and (5) is not easily disconnected. .

【0011】受話部(1)の筐体(14)と送話部
(2)の筐体(24)は、ヒンジ部(3)により回動可
能に接続され、受話部(1)と送話部(2)はαラジア
ンの角度で開閉する。
The housing (14) of the receiving section (1) and the housing (24) of the transmitting section (2) are rotatably connected by a hinge section (3), and the transmitting section (1) and the transmitting section are transmitted. The part (2) opens and closes at an angle of α radians.

【0012】第1、第2のフレキシブルプリント基板
(4)(5)で接続された受話部(1)と送話部(2)
のプリント基板(11)(12)が携帯電話端末に組み
込まれるとき、第1、第2のフレキシブルプリント基板
(4)(5)のヒンジ部(3)に対応する部分がヒンジ
部(3)の回転方向に1巻きされる。
A receiving section (1) and a transmitting section (2) connected by first and second flexible printed circuit boards (4) and (5).
When the printed circuit boards (11) and (12) of the first and second flexible printed circuit boards (4) and (5) are incorporated in a mobile phone terminal, the portions corresponding to the hinge sections (3) of the first and second flexible printed circuit boards (4) and (5) are the same. One turn in the rotation direction.

【0013】図3、図4は第1、第2のフレキシブルプ
リント基板(4)(5)の螺旋状態の変化を示す側面図
である。図3は携帯電話端末を開いた状態であり、図4
は閉じた状態である。
FIGS. 3 and 4 are side views showing changes in the spiral state of the first and second flexible printed circuit boards (4) and (5). FIG. 3 shows a state in which the mobile phone terminal is opened, and FIG.
Is closed.

【0014】開いた状態の図3に於いて、内側となる第
1のフレキシブルプリント基板(4)の外面(41)の
平均半径R1は、外側となる第2のフレキシブルプリン
ト基板(5)の内面(51)の平均半径R2より僅か大
きくなっている。
In FIG. 3 in an opened state, the average radius R1 of the outer surface (41) of the inner first flexible printed circuit board (4) is equal to the inner surface of the outer second flexible printed circuit board (5). It is slightly larger than the average radius R2 of (51).

【0015】ここで、閉じることにより、螺旋部の隙間
がどのように変化するかを説明する。まず、閉じること
による第1のフレキシブルプリント基板(4)の螺旋の
変化を説明する。閉じた状態の第1のフレキシブルプリ
ント基板(4)の外面(41)の平均半径をR1’と
し、螺旋でない受話部(1)側及び送話側(2)の第1
のフレキシブルプリント基板(4)の長さを夫々L1,
L2とする(図4参照)。また、閉じる角度はαラジア
ンとし、螺旋形状を近似的に円形とする。
Here, how the gap of the spiral portion changes by closing will be described. First, the change in the spiral of the first flexible printed circuit board (4) due to the closing will be described. The average radius of the outer surface (41) of the first flexible printed circuit board (4) in the closed state is defined as R1 ′, and the first non-spiral receiving unit (1) side and the transmitting side (2) have the first radius.
The length of the flexible printed circuit board (4) is L1,
L2 (see FIG. 4). The closing angle is α radian, and the spiral shape is approximately circular.

【0016】開いた状態(図3)の第1のフレキシブル
プリント基板(4)の両コネクタ(12)(22)間の
長さはL1+L2+2πR1+(π−α)R1となる。
ここで、(π−α)R1は螺旋が重なる部分である。閉
じた状態(図4)の第1のフレキシブルプリント基板
(4)の両コネクタ(12)(22)間の長さはL1+
L2+2πR1’+πR1’となる。ここで、πR1’
は螺旋が重なる部分である。この開いた状態(図3)の
長さと閉じた状態(図4)の長さでは同じであることか
ら、L1+L2+2πR1+(π−α)R1=L1+L
2+2πR1’+πR1’となる。これを解くとR1’
=R1−αR1/3πとなる。即ち、ヒンジ部(3)が
αラジアン閉じると、第1のフレキシブルプリント基板
(4)の螺旋の半径はαR1/3π短くなる。
The length between the connectors (12) and (22) of the first flexible printed circuit board (4) in the open state (FIG. 3) is L1 + L2 + 2πR1 + (π-α) R1.
Here, (π-α) R1 is a portion where the spirals overlap. The length between both connectors (12) and (22) of the first flexible printed circuit board (4) in the closed state (FIG. 4) is L1 +
L2 + 2πR1 ′ + πR1 ′. Here, πR1 ′
Is the part where the spirals overlap. Since the length of the open state (FIG. 3) and the length of the closed state (FIG. 4) are the same, L1 + L2 + 2πR1 + (π-α) R1 = L1 + L
2 + 2πR1 ′ + πR1 ′. When this is solved, R1 '
= R1-αR1 / 3π. That is, when the hinge portion (3) is closed by α radians, the radius of the spiral of the first flexible printed circuit board (4) becomes shorter by αR1 / 3π.

【0017】第2のフレキシブルプリント基板(5)の
螺旋の半径も、同様に、ヒンジ部(3)がαラジアン閉
じると、αR2/3π短くなる。
Similarly, the radius of the helix of the second flexible printed circuit board (5) becomes shorter by αR2 / 3π when the hinge part (3) is closed by α radians.

【0018】ここで、R2>R1であるので、αR2/
3π>αR1/3πとなり、内側となる第1のフレキシ
ブルプリント基板(4)の外面(41)と、外側となる
第2のフレキシブルプリント基板(5)の内面(51)
の隙間は(即ち、上下のフレキシブルプリント基板の隙
間は)、ヒンジ部(3)が閉じることにより狭くなる。
Here, since R2> R1, αR2 /
3π> αR1 / 3π, and the outer surface (41) of the first flexible printed circuit board (4) on the inside and the inner surface (51) of the second flexible printed circuit board (5) on the outside
(That is, the gap between the upper and lower flexible printed circuit boards) is narrowed by closing the hinge portion (3).

【0019】よって、図3の開いた状態でなく、図4の
閉じた状態で上下のフレキシブルプリント基板(4)
(5)の螺旋部に隙間ができるように設計する。実験に
よると、平均半径0.2mmの隙間を設けたとき10万
回の開閉でもフレキシブルプリント基板の断線がなかっ
た。実験では0.2mm以上の隙間が必要ということに
なるが、複数の螺旋の中心が相対的にずれることや部品
寸法のばらつき等を考慮し、実際の量産では余裕をもた
せて0.5mm以上にすることが好ましい。
Therefore, the upper and lower flexible printed circuit boards (4) are not closed in FIG. 3 but closed in FIG.
It is designed so that a gap is formed in the spiral part of (5). According to an experiment, when a gap having an average radius of 0.2 mm was provided, there was no disconnection of the flexible printed circuit board even after opening and closing 100,000 times. In the experiment, a gap of 0.2 mm or more is required, but in consideration of the relative displacement of the centers of multiple spirals and variations in component dimensions, etc., in actual mass production, allow a margin of 0.5 mm or more. Is preferred.

【0020】尚、上述の計算は螺旋形状を円形とみなし
たが、量産の設計にあたっては、手作り品で隙間の確認
をすればよい。また、複数の螺旋の中心が相対的にずれ
ることを考慮し、隙間はゆとりを持たせる。
In the above calculation, the spiral shape is assumed to be circular. However, in designing mass production, it is sufficient to confirm the gap with a handmade product. Also, considering that the centers of the plurality of spirals are relatively displaced, the clearance is given a margin.

【0021】尚、上述の実施例のフレキシブルプリント
基板の重なりは2枚であったが、本発明は3枚以上の場
合にも容易に適用させることができる。
Although the number of the flexible printed circuit boards in the above embodiment is two, the present invention can be easily applied to the case where the number of the flexible printed circuit boards is three or more.

【0022】[0022]

【発明の効果】上述のごとく、複数のフレキシブルプリ
ント基板が前記ヒンジ部内で重なって螺旋している携帯
電話端末に於いて、最も上下のフレキシブルプリント基
板の隙間が狭くなるのは閉じた状態であるから、この状
態で隙間があるように設計する。このために、フレキシ
ブルプリント基板どうしの摩擦が少なくなり、開閉の耐
久性が向上する。
As described above, in a portable telephone terminal in which a plurality of flexible printed circuit boards overlap and spiral in the hinge portion, the space between the uppermost and lower flexible printed circuit boards is narrowed in the closed state. Therefore, it is designed so that there is a gap in this state. For this reason, the friction between the flexible printed boards is reduced, and the durability of opening and closing is improved.

【0023】また、複数の螺旋の中心が相対的にずれる
ことを考慮し、閉じた状態の隙間にゆとりを持たせるた
め、摩擦がより少なくなる。
Further, considering that the centers of the plurality of spirals are relatively displaced, the clearance in the closed state is given a margin, so that the friction is further reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】フレキシブルプリント基板を携帯電話端末に組
み込む前の状態を示す部分透過斜視図である。
FIG. 1 is a partially transparent perspective view showing a state before a flexible printed circuit board is incorporated into a mobile phone terminal.

【図2】図2の組み込んだ後の状態を示す部分透過斜視
図である。
FIG. 2 is a partially transparent perspective view showing a state after being assembled in FIG. 2;

【図3】開いた状態の螺旋部の状態を示す側面図であ
る。
FIG. 3 is a side view showing a state of a spiral portion in an opened state.

【図4】閉じた状態の螺旋部の状態を示す側面図であ
る。
FIG. 4 is a side view showing a state of a spiral portion in a closed state.

【図5】図4に対応する従来例を示す側面図である。FIG. 5 is a side view showing a conventional example corresponding to FIG.

【符号の説明】[Explanation of symbols]

1 受話部 11 受話部のプリント基板 12 受話部のコネクタ 13 受話部のコネクタ 14 受話部の筐体 2 送話部 21 送話部のプリント基板 22 送話部のコネクタ 23 送話部のコネクタ 24 受話部の筐体 3 ヒンジ部 4 第1のフレキシブルプリント基板 41 第1のフレキシブルプリント基板の上面 5 第2のフレキシブルプリント基板 51 第2のフレキシブルプリント基板の上面 DESCRIPTION OF SYMBOLS 1 Receiver 11 Printed circuit board of receiver 12 Connector of receiver 13 Connector of receiver 14 Housing of receiver 2 Transmitter 21 Printed circuit board of transmitter 22 Connector of transmitter 23 Connector of transmitter 24 Receiver Unit 3 Hinge 4 First Flexible Printed Board 41 Upper Surface of 1st Flexible Printed Board 5 2nd Flexible Printed Board 51 Upper Surface of 2nd Flexible Printed Board

───────────────────────────────────────────────────── フロントページの続き (72)発明者 尾崎 次郎 鳥取県鳥取市南吉方3丁目201番地 鳥取 三洋電機株式会社内 Fターム(参考) 4E360 AA02 AB12 AB17 AB20 AB42 ED04 ED17 ED27 GA12 GA33 GB26 5K023 AA07 BB26 DD08 LL01  ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Jiro Ozaki 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture F-term in Tottori Sanyo Electric Co., Ltd. (reference) 4E360 AA02 AB12 AB17 AB20 AB42 ED04 ED17 ED27 GA12 GA33 GB26 5K023 AA07 BB26 DD08 LL01

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ヒンジを介して開閉可能に設けられた第
1、第2の筐体と、ヒンジ部を介して第1の筐体から第
2の筐体に渡って配設される複数のフレキシブルプリン
ト基板とを備え、 前記ヒンジ部内に於いて、前記複数のフレキシブル基板
を重ねて螺旋状に配設し、且つ前記第1、第2の筐体を
閉じたときヒンジ部に於けるフレキシブル基板の夫々の
間に隙間を設けるようにしたことを特徴とする折畳式携
帯電話端末。
A first housing and a second housing which are provided to be openable and closable via a hinge, and a plurality of housings arranged from the first housing to the second housing via a hinge portion. A flexible printed circuit board, wherein the plurality of flexible boards are arranged in a spiral in the hinge portion, and the first and second housings are closed when the flexible substrate is closed. Wherein a gap is provided between each of the portable telephone terminals.
【請求項2】 ヒンジを介して開閉可能に設けられた第
1、第2の筐体と、ヒンジ部を介して第1の筐体から第
2の筐体に渡って配設される複数のフレキシブルプリン
ト基板とを備え、 前記ヒンジ部内に於いて、前記複数のフレキシブル基板
を重ねて螺旋状に配設し、且つ前記第1、第2の筐体を
閉じたとき外側のフレキシブルプリント基板の内面の平
均半径がその内側のフレキシブルプリント基板の外面の
平均半径より所定寸法以上大きくなるようにしたことを
特徴とする折畳式携帯電話端末。
2. A plurality of first and second housings provided to be openable and closable via a hinge, and a plurality of housings arranged from the first housing to the second housing via a hinge portion. A flexible printed circuit board, wherein the plurality of flexible boards are arranged in a spiral in the hinge portion, and the inner surface of the outer flexible printed circuit board when the first and second housings are closed. Wherein the average radius is larger than the average radius of the outer surface of the flexible printed circuit board by a predetermined dimension or more.
JP2000251419A 2000-08-22 2000-08-22 Folding mobile phone terminal Expired - Fee Related JP3717769B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000251419A JP3717769B2 (en) 2000-08-22 2000-08-22 Folding mobile phone terminal

Publications (2)

Publication Number Publication Date
JP2002064604A true JP2002064604A (en) 2002-02-28
JP3717769B2 JP3717769B2 (en) 2005-11-16

Family

ID=18740829

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP3717769B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006073840A (en) * 2004-09-03 2006-03-16 Nec Corp Flexible wiring substrate and folding electronic equipment
JP2006238232A (en) * 2005-02-25 2006-09-07 Kyocera Corp Electronic equipment and cover member
US7391467B2 (en) 2003-05-02 2008-06-24 Samsung Electronics Co., Ltd. Signal delivery apparatus, hinge apparatus and image photographing apparatus
US7711112B2 (en) 2002-03-19 2010-05-04 Panasonic Corporation Hinge, and opening/closing type portable terminal device having the same
US11003222B2 (en) 2016-06-24 2021-05-11 Samsung Electronics Co., Ltd Electronic device comprising multiple displays

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7711112B2 (en) 2002-03-19 2010-05-04 Panasonic Corporation Hinge, and opening/closing type portable terminal device having the same
US7391467B2 (en) 2003-05-02 2008-06-24 Samsung Electronics Co., Ltd. Signal delivery apparatus, hinge apparatus and image photographing apparatus
JP2006073840A (en) * 2004-09-03 2006-03-16 Nec Corp Flexible wiring substrate and folding electronic equipment
JP4552565B2 (en) * 2004-09-03 2010-09-29 日本電気株式会社 Flexible wiring board and folding electronic device
JP2006238232A (en) * 2005-02-25 2006-09-07 Kyocera Corp Electronic equipment and cover member
JP4671710B2 (en) * 2005-02-25 2011-04-20 京セラ株式会社 Electronics
US11003222B2 (en) 2016-06-24 2021-05-11 Samsung Electronics Co., Ltd Electronic device comprising multiple displays
US11360525B2 (en) 2016-06-24 2022-06-14 Samsung Electronics Co., Ltd Electronic device comprising multiple displays

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