CN1323408C - Flexible cord and optical disk device using the flexible cord - Google Patents
Flexible cord and optical disk device using the flexible cord Download PDFInfo
- Publication number
- CN1323408C CN1323408C CNB2003101181839A CN200310118183A CN1323408C CN 1323408 C CN1323408 C CN 1323408C CN B2003101181839 A CNB2003101181839 A CN B2003101181839A CN 200310118183 A CN200310118183 A CN 200310118183A CN 1323408 C CN1323408 C CN 1323408C
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- flat cable
- flexible flat
- metal level
- main body
- flexible
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Abstract
The present invention provides a flexible rowed wire and an optical disk device using the flexible rowed wire. The flexible wound wire can inhibit electromagnetic interference generated from signals transmitted by the flexible wound wire and comprises a flexible rowed wire body and a metal layer, wherein the metal layer is arranged on the flexible rowed wire body along a signal transmitting direction, wherein the width of the metal layer perpendicular to the signal transmitting direction is smaller than that of the flexible rowed wire body.
Description
Technical field
The present invention is about a kind of flexible flat cable and use the optical disc apparatus of this flexible flat cable, particularly capable of suppressing electromagnetic interference flexible flat cable.
Background technology
The optical read head of optical disc apparatus inside (optical pickup unit) reads and writes the key element of data for optical disc apparatus, to the transmission signals quality requirement than general electronic products height.Can utilize a flexible flat cable to link up between itself and mainboard (main board).Because optical read head operating frequency height, the signal that transmits on flexible flat cable easily produce three times, four-time harmonic noise (harmonic noise), frequency drops on 700-900MHz.This noise will form electromagnetic interference to other devices to external radiation.
It is many to suppress this type of electromagnetic interference method, for example the optical disc apparatus panel is plated metal level, or flexible flat cable is put ferrite core (ferrite core).It is pretty good that the latter suppresses the electromagnetic interference effect, but the cost height, and easily influence the effect of flexible flat cable.The another one way as shown in Figure 1.Fig. 1 is on one or two sides of flexible flat cable main body 102, pastes aluminium foil 108 comprehensively.Though this method can effectively suppress electromagnetic interference, have an opportunity to be coupled (couple) mutually because of aluminium foil 108 makes the signal on the flexible flat cable main body 102, and influence optical read head write quality (writing quality).
Summary of the invention
Main purpose of the present invention is promptly providing a kind of flexible flat cable and is using the optical disc apparatus of this flexible flat cable, and can suppress electromagnetic interference does not influence again and write quality.
The invention provides a kind of flexible flat cable, the electromagnetic interference that the signal that can suppress to be transmitted by flexible flat cable produces, flexible flat cable comprises a flexible flat cable main body and a metal level.Metal level along side signal transmission on a face that only is arranged on the flexible flat cable main body.Wherein a metal layer width of metal level vertical signal transmission direction is less than the width of flexible flat cable main body.
The metal level of aforementioned flexible flat cable, except that can be one rectangular, also can comprise a plurality of metal levels unit of each interval.Metal level is arranged on and produces electromagnetic interference than the strength in addition, and material is selected from the family that comprises copper and aluminium.
The present invention also provides an optical disc apparatus, comprises an optical read head, a mainboard and foregoing flexible flat cable.The two ends of this flexible flat cable are connected respectively to optical read head and mainboard, for transmission signals between optical read head and mainboard, can suppress the electromagnetic interference that signal produces.
Description of drawings
Fig. 1 is the flexible flat cable schematic diagram according to prior art;
Fig. 2 is the flexible flat cable first embodiment schematic diagram of the present invention;
Fig. 3 is the flexible flat cable second embodiment schematic diagram of the present invention;
Fig. 4 is flexible flat cable the 3rd an embodiment schematic diagram of the present invention; And
Fig. 5 is an optical disc apparatus embodiment schematic diagram of the present invention.
Figure element symbol description
102,202,402,502 flexible flat cable main bodys
108 aluminium foils, 200,300,400,500 flexible flat cables
206,406 side signal transmissions are to 208,308,408,508 metal levels
210 metal layer width, 212 flexible flat cable body width
214,414 produce the holding wire than strong electromagnetic
518 optical disc apparatus, 520 optical read heads
522 mainboards, 524 optical disc apparatus, first side
526 need to suppress the electromagnetic interference direction
Embodiment
Fig. 2 is the schematic diagram of flexible flat cable first embodiment 200 of the present invention.This flexible flat cable 200 can suppress the electromagnetic interference that its signal that transmits produces.Flexible flat cable 200 comprises a flexible flat cable main body 202 and a metal level 208.Metal level 208 is arranged on the flexible flat cable main body 202 to 206 along side signal transmission.Wherein a metal layer width 210 of metal level 208 vertical signal transmission directions 206 is less than the width 212 of flexible flat cable main body 202.Metal level 208 can only be arranged on generation than the strong electromagnetic place, for example on the transmission line 214.The material of metal level 208 is selected from the family that comprises copper and aluminium, and can be Copper Foil or aluminium foil.
Fig. 3 is flexible flat cable second embodiment 300 schematic diagrames of the present invention.Among this embodiment 300, metal level 308 is one rectangular unlike the metal level among first embodiment 200 208, but spaced two metal level unit 308.It is suitable with first embodiment 200 to suppress the electromagnetic interference effect with this, and when being applied to optical disc apparatus, does not also influence the quality that writes of optical read head under high temperature (for example 35-45 ℃).
Fig. 4 is flexible flat cable the 3rd embodiment 400 schematic diagrames of the present invention.This embodiment 400 and second embodiment 300 are similar, and same is arranged on transmission line 414 places with metal level 408, just produce the transmission line 414 position differences than strong electromagnetic this moment.
Fig. 5 is optical disc apparatus embodiment 518 schematic diagrames of the present invention.This embodiment 518 comprises an optical read head 520, a mainboard 522 and flexible flat cable 500.The two ends of flexible flat cable 500 are connected respectively to optical read head 520 and mainboard 522.This flexible flat cable 500 can suppress the electromagnetic interference that signal produces at optical read head 520 and 522 transmission signals of mainboard.Flexible flat cable 500 comprises a flexible flat cable main body 502 and metal level 508.Here metal level 508 is spaced two metal level unit 508, but also can be one rectangular.Metal level 508 along side signal transmission to being arranged on the flexible flat cable main body 502.Wherein a metal layer width of metal level 508 vertical signal transmission directions is less than the width of flexible flat cable main body 502.Metal level 508 can only be arranged on the transmission line place of generation than strong electromagnetic, and its material is selected from the family that comprises copper and aluminium, and can be Copper Foil or aluminium foil.The panel of this optical disc apparatus 518 is positioned at first side 524, and can notice that metal level 508 is arranged on the side of flexible flat cable main body 502 towards first sides 524.This panel because of optical disc apparatus 518 is generally plastics and makes, and can't block electromagnetic disturb, and then the electromagnetic interference of noise formation can radiate along direction 526.So metal level 508 must be arranged on the side of flexible flat cable main body 502 towards panel, to suppress the electromagnetic interference that noise forms.
Above-mentioned explanation is not a limitation of the scope of the invention, and the arrangement of above-mentioned explanation and various change and equivalence is all in the scope that claim of the present invention is intended to protect.
Claims (8)
1. flexible flat cable, the electromagnetic interference that the signal that can suppress to be transmitted by this flexible flat cable produces, this flexible flat cable comprises:
One flexible flat cable main body; And
One metal level, along this side signal transmission on a face that only is arranged on this flexible flat cable main body;
Wherein vertical this side signal transmission of this metal level to a metal layer width less than the width of this flexible flat cable main body.
2. flexible flat cable as claimed in claim 1, wherein this metal level comprises a plurality of metal levels unit, this a plurality of metal levels unit each interval.
3. flexible flat cable as claimed in claim 1, wherein this metal level is arranged on and produces this electromagnetic interference than the strength.
4. flexible flat cable as claimed in claim 1, wherein the material of this metal level is selected from the family that comprises copper and aluminium.
5. an optical disc apparatus comprises:
One optical read head;
One mainboard; And
One flexible flat cable, the two ends of this flexible flat cable are connected respectively to this optical read head and this mainboard, for transmission signals between this optical read head and this mainboard, comprise:
One flexible flat cable main body; And
One metal level, along this side signal transmission on a face that only is arranged on this flexible flat cable main body;
Wherein vertical this side signal transmission of this metal level to a metal layer width less than the width of this flexible flat cable main body.
6. optical disc apparatus as claimed in claim 5, wherein this metal level comprises a plurality of metal levels unit, and this a plurality of metal levels unit does not link to each other each other.
7. optical disc apparatus as claimed in claim 5, wherein this metal level is arranged on the electromagnetic interference of this signal generation than the strength.
8. optical disc apparatus as claimed in claim 5, wherein the material of this metal level is selected from the family that comprises copper and aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101181839A CN1323408C (en) | 2003-11-25 | 2003-11-25 | Flexible cord and optical disk device using the flexible cord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101181839A CN1323408C (en) | 2003-11-25 | 2003-11-25 | Flexible cord and optical disk device using the flexible cord |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1622227A CN1622227A (en) | 2005-06-01 |
| CN1323408C true CN1323408C (en) | 2007-06-27 |
Family
ID=34761087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101181839A Expired - Fee Related CN1323408C (en) | 2003-11-25 | 2003-11-25 | Flexible cord and optical disk device using the flexible cord |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1323408C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103165236B (en) * | 2011-12-19 | 2016-08-10 | 富士康(昆山)电脑接插件有限公司 | Flexible flat cable |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644092A (en) * | 1985-07-18 | 1987-02-17 | Amp Incorporated | Shielded flexible cable |
| JPH11120831A (en) * | 1997-10-14 | 1999-04-30 | Tatsuta Electric Wire & Cable Co Ltd | Shield flat cable |
| CN2377798Y (en) * | 1999-05-19 | 2000-05-10 | 伽太实业有限公司 | Soft bank preventing interference of electromagnetic wave |
| JP2001167642A (en) * | 1999-12-13 | 2001-06-22 | Daichu Denshi Co Ltd | Flexible printed wiring board and flexible flat cable |
| JP2003031035A (en) * | 2001-07-17 | 2003-01-31 | Dainippon Printing Co Ltd | Electromagnetic wave shielding material and flat cable having electromagnetic wave shield |
| CN2566422Y (en) * | 2002-09-16 | 2003-08-13 | 天瑞企业股份有限公司 | Flexible cable with structure for preventing electromagnetic wave interference |
| CN2569292Y (en) * | 2002-07-24 | 2003-08-27 | 吴东兴 | Soft row-line improved structure for preventing electromagnetic wave |
-
2003
- 2003-11-25 CN CNB2003101181839A patent/CN1323408C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644092A (en) * | 1985-07-18 | 1987-02-17 | Amp Incorporated | Shielded flexible cable |
| JPH11120831A (en) * | 1997-10-14 | 1999-04-30 | Tatsuta Electric Wire & Cable Co Ltd | Shield flat cable |
| CN2377798Y (en) * | 1999-05-19 | 2000-05-10 | 伽太实业有限公司 | Soft bank preventing interference of electromagnetic wave |
| JP2001167642A (en) * | 1999-12-13 | 2001-06-22 | Daichu Denshi Co Ltd | Flexible printed wiring board and flexible flat cable |
| JP2003031035A (en) * | 2001-07-17 | 2003-01-31 | Dainippon Printing Co Ltd | Electromagnetic wave shielding material and flat cable having electromagnetic wave shield |
| CN2569292Y (en) * | 2002-07-24 | 2003-08-27 | 吴东兴 | Soft row-line improved structure for preventing electromagnetic wave |
| CN2566422Y (en) * | 2002-09-16 | 2003-08-13 | 天瑞企业股份有限公司 | Flexible cable with structure for preventing electromagnetic wave interference |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1622227A (en) | 2005-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIASHIDA TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BENQ MOTOR CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: China Taiwan Taoyuan County Patentee after: Qisda Corporation Address before: Taoyuan County of Taiwan Province Patentee before: Benq Corp. |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: LITE-ON photoelectric technology (Guangzhou) Co., Ltd. Assignor: Qisda Corporation Contract fulfillment period: 2008.7.1 to 2014.6.30 contract change Contract record no.: 2009990000953 Denomination of invention: Flexible cord and optical disk device using the flexible cord Granted publication date: 20070627 License type: Exclusive license Record date: 2009.8.25 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.7.1 TO 2014.6.30; CHANGE OF CONTRACT Name of requester: JIANXING PHOTOELECTRICITY SCIENCE AND TECHNOLOGY( Effective date: 20090825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070627 Termination date: 20141125 |
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| EXPY | Termination of patent right or utility model |