TWI236782B - The structure of the flat flexible circuit board with the shielding planar layer - Google Patents

Abstract

A flat flexible circuit board structure with the shielding planar layer is disclosed. The circuit board consists of an extended insulated section and at least a pair of differential mode transmission lines aligned and spaced at intervals on the insulated section parallelly and horizontally. The differential mode transmission lines extend form the first end to the second end of the insulated section along the extension direction of the insulated section. At least one surface of the differential mode transmission line has one shielding planar layer by which the impedance is provided for each differential mode transmission line. The flat shielding layer can be a net shielding planar layer, or the flat shielding layer consisting of a plurality of hole regions. A plural number of extended insulated sections are stacked from top to bottom so they form a multi-layer stacked insulated section. At least one pair of differential mode transmission lines are in one insulated section, and one shielding planar layer is disposed on the surface of the insulated section.

Description

1236782 V. Description of the invention

[Technical field to which the invention belongs] The present invention relates to a flexible circuit structure, and more particularly, to a flat flexible circuit board structure having a shield plane layer. [Prior art] In the circuit design of various electric cry devices such as computer equipment, measuring instruments, or control devices, connecting wires and signal cables are often used: or connecting cables to connect different circuit boards and circuits. Modules, or the connection of two or more electric devices as electrical signals. For example, in the currently widely used notebook computers, the notebook computer host and the liquid crystal display screen, that is, most of the flat-shaped connection cable is used for electrical signal connection, the signal at both ends of the connection cable The contact ends are respectively connected to signal connection bases of the notebook computer main body and the liquid crystal display screen. In addition to having a Transm line, in addition to being able to transmit signals at the same time, it needs to be different and must be opened. Slots, but in the design of logic circuits for high-speed signal transmission, the shielded surface of the differential mode "Differentiai j ^ de ission Line" is usually used for high-speed data transmission. This signal transmits differential mode signals (Differentiai Mode In addition to the transmission of common mode, it can also be used for transmission of common mode 彳 s (Co mm on Mode). A typical differential mode transmission line needs to have an impedance of 100 ohms, while a typical common mode signal must have 100 ohms. In the traditional technology, in order to connect the connection cable between a circuit board, a circuit module, or an electrical device, usually: 2 preset slot for a flexible cable or soft Circuit board penetration-In some applications, it may only allow the opening of round holes or squares. This round hole or square slot structure does not allow the traditional cable to pass through.

Page 51236782 ----- 5. Description of the invention (2) The designer can only achieve similar connection through similar identification but the coaxial cable cannot be connected by i, 'see the line. This is a phenomenon. It caused the limitation of the designer of the flexible special electric circuit that thunder and defeated the aforementioned flexible circuit wiring. [Summary of the Invention] The technical problem to be solved by the present invention is to solve the above-mentioned high-speed signal transmission wheel with a good signal shielding effect of the differential mode, how to design a shielding plane layer that can be properly designed to ^ = rain line structure, and at the same time Value is really an important issue. In the structure of the impedance flat flexible circuit board of the differential signal transmission line, more fj: the flatness of the shield plane layer has more practical value in terms of industry; the structure of the spiritual layer is provided with insulation, for this reason, the present invention The main purpose layer is a flat flexible circuit board structure with a shielding plane and at least a pair of differential mode signal transmission lines. When the high insulation section is transmitted by transmission lines, it can have a good signal; Modal signal Another object of the present invention is to provide a differential mode signal transmission line structure with the most important characteristics of the company, which is extended by a plurality of; two ,,, and ° structures to form a multilayer laminated insulation section, At least one pair of differential-mode signal transmission lines can be stacked on top of each zero-pin product, and the configuration surfaces in this segment are also provided with a -shielding plane layer. Table of X-insulation section I Invented the technical means to solve the problem I The technical means adopted by the invention to solve the problem of the conventional technology is

Page 61236782 —— ~ V. Description of the invention (3) The differential mode signal transmission reel line is arranged in an extended insulation section, among which, it is arranged in the insulation area at intervals along the direction of ″. The section extends to the second η: = the extension direction is provided by a shield plane at the-end of the insulation section. At least one surface of the transmission line § is configured with a plurality of extended insulation; "Gamma milk a" is placed and formed to form a pair of differential mode signal transmission keys. At the r-edge section, at least one is provided-shielding plane two is better: the surface of the edge section is also equipped with a plane layer or has A plurality of opening areas: screen = :; using a net-shaped shield according to the present invention compared with the efficacy of the prior art power transmission means, f so that the differential mode signal transmission line-a predetermined distance transmitted by the differential mode signal transmission line: ί It also provides the impedance value required for the differential mode signal hunting differential pull. [Embodiment] Referring to the first figure, it is a flat-type flexible circuit board with a surname of hibiscus: The flat type has a thousand layers of screens, indicating that the flat type is flexible; Figure, the second figure is displayed

1 〇 Including the flat-type IU circuit structure of the first embodiment, there is an extended insulation section 1 whose top surface is the first surface U 1236782 V. Description of the invention (4) :: 1 surface The plane 12 ′ and the second line 2 ^ == are formed at both ends of the insulation section 1 and at least -the first -Λ of the differential mode signal transmission i is arranged. The transmission line 21 is parallel to the insulation section 1 Medium (arranged adjacently in the Λ & U plane direction at an interval in the insulation section, as shown in the figure) and the differential signal transmission line 21 extends to the second end ^. The extension direction 11 is extended by the first end 13 of the insulation section 1: inside the t section is different from the area where the differential mode signal transmission line 21 is arranged. The second: the signal transmission line 22, which is located in each insulation section depending on the application. A first surface η is formed on the first surface η to maintain a predetermined distance from each differential mode signal transmission line 21. Kir / is used as the shielding surface M of the differential mode signal transmission line, and also the impedance value required by the differential transmission line. Board, Ϊ: I ί Display: j :: Two flat-type flexible electrical designs with shielding plane layer are roughly * In this embodiment, the structure is in the insulation section! The example is the same, the difference is that except for the surface layer 3, the surface U (ie, the top surface) is formed-shielded, flattened-shielded flattened on the road board, :: mu :: flat flat type with shielded flat layer The electrical design is roughly upright; Figure 'In this embodiment, its structure is the same as that shown in Figure 2. The difference is that the page 81236782 -1 1 ~ 1 丨 丨 1 5. Description of the invention (5) The shielding plane layer formed on the first surface 11 (ie, the top surface) of the section 1 is: the mesh shielding plane layer 32 'can also provide the shielding surface and impedance matching function of the differential mode signal transmission line. . The% green sixth diagram is a perspective view of a fourth embodiment of the flat flexible circuit f structure having a shielding plane layer according to the present invention. The second embodiment and the first embodiment are the same, the difference is Γί ϋ (that is, Top plane) The shielding plane layer M ′ Khan 0 has a plurality of opening areas 33 1 of the shielding plane layer 33 〇 Now each is along the difference in the insulating section 1 ^ 21 opening holes on ° It's bad / it should be installed on the corresponding differential mode signal transmission line 22 to reduce the 21-disk shielding impedance of the differential mode signal transmission line. That is to say, the seventh diagram for increasing the transmission line and the shielding plane layer is to show the fifth implementation of the present invention and the right body # circuit board structure:] body: screen :: surface! Flat-type flexible electric circuit: A laminated flat-type flexible circuit is provided, and extended insulation sections la, lb, lc are used for the dead and talents, and the upper and lower sections f include a plurality of laminated insulation sections. Similarly to the aforementioned first embodiment, a mother-insulator section la, lb, and lc also has 彳 ,,,, and 。. Structure, in the transmission line 21, each pair of difference hibis _ cry # ^. There is a pair of differential mode I-level strikes—the differential core or transmission line 21 is also arranged in the insulation section with a _tajishi a door divider, and the direction of Shanghai and Shanghai is extended to 11. . σ is the extension of the μ-named edge section in each of the insulating sections la, lb, and 1c, and the shielding plane layers 3a, 3b, and 3c. It is also provided with a 3c, and is connected to the insulating section 1 & , 邝, "Zhongzhi fr + l page 91236782 V. Description of the invention (6) The f-mode signal transmission line 21 is maintained between layers-layers 3a, 3b, 3c to provide various differential modes, hunting the eighth figure of the shielding plane The impedance value of line 21 shown in the seventh figure is shown. The first application example of the structure 200 is shown in the figure. The two flat-type flexible electrical $ flat-type soft circuit structures 200 are connected ::::, the multi-layer Between the 'and the flat-type flexible electrical connectors 41, 42 of the multiple layers = the extended section 51 is extended, so that the-end of the reset H °° is divided, "" 冓 2〇〇 The signal contacts of the internal differential mode signal transmission line C flat-type flexible circuit devices 41 and 42. The multi-layer is most suitable for connecting to the connection 200. In addition to being connected to the two connectors 41, the flat-type flexible circuit structure is connected between a connector and a thunder &# & + _, of course also Can be ninth picture: between contacts. Second application example of circuit structure. In this application, the second application is a flat-type flexible circuit structure with a flat and flexible electrical stack. Also, it multiplexes two separate multi-layers and lays it flat, but it makes it: the end is connected to the first One terminal "43" ==== one end is connected to the first connector 43 == the circuit structure is 200b connectors 45. Since the present invention provides a connection to a third, the user can follow Actually needed, choose different: J two functions, the price is really high, the present invention is really good, and the best foot field according to the present invention J is based on the above embodiment of the present invention, page 101236782 5. Description of the invention Various other improvements and changes will be made. However, these improvements and changes made according to the embodiments of the present invention shall still fall within the spirit of the present invention and the scope of patents defined below.

1236782 Brief description of the drawings [Simplified description of the drawings] The first diagram is a perspective view of the first embodiment of the flat flexible circuit board structure with a shielding plane layer of the present invention; the second diagram is a flat flexible circuit structure in the first diagram The top view is a schematic plan view; the third view is a cross-sectional view of the 2-2 cross section in the first view; the fourth view is a perspective view of the second embodiment of the flat flexible circuit board structure with a shielding plane layer according to the present invention; the fifth FIG. Is a perspective view of a third embodiment of a flat flexible circuit board structure with a shielding plane layer according to the present invention; a sixth view is a perspective view of a fourth embodiment of a flat flexible circuit board structure with a shielding plane layer according to the present invention; FIG. Is a perspective view of a fifth embodiment of a flat flexible circuit board structure with a shielding plane layer according to the present invention; FIG. 8 is a first application example of a flat flexible circuit board structure with multiple layers shown in the seventh figure; The ninth figure is a second application example of the flat-type flexible circuit structure shown in the seventh figure. Explanation of symbols of each component of the drawing: 1 Insulation section I a, 1 b, 1 c Insulation section II First surface 12 Second surface

1236782

Brief description of the drawing 13 First end 14 Second end 21 Differential signal transmission line 22 Common mode signal transmission line 3 > 31 Shielding plane layer 32 Mesh shielding plane layer 33 Shielding plane layer 3a, 3b, 3c with opening area Flat layers 41, 42 Connectors 43 '44 > 45 Connectors 51 Expanded section 100 Flat type flexible circuit structure 200, 200a, 200b Flat type flexible circuit structure laminated

Page 13

Claims (1)

Ϊ236782 VI. Scope of patent application _______ There is a flat flexible circuit board structure with a shield plane layer, which includes an extended insulating section, and both ends of the first edge section form a first end and a second end. Two surfaces' and in the j-to-differential mode signal transmission line, square insulation section, and extending along the insulation section from the first end to the second end of the section; the extension direction of the branch is from the insulation area -Shielding plane layer, which is arranged between the insulation section and a differential mode signal transmission line to be maintained. ′ And the surface layer k provide the impedance values of each differential mode signal transmission line. Open Mosquito 2 · ^ ^ ^ Monthly patent scope item 1 bird-type flat-layer circuit board structure with a shield plane layer, where the shield plane layer is a net-shaped shield plane person 3 } The flat, circuit board structure with a shielding plane layer as described in the item}, wherein the shielding plane layer is a shielding plane layer having a plurality of openings, and each of the opening regions is along the insulating region. It is arranged in the extending direction of the differential mode signal transmission line. 〇〇4. The flat flexible circuit board structure with a shielding plane layer as described in item j of the patent scope, wherein the inside of the insulating section is configured with at least one common mode signal in addition to the differential mode% transmission line. Transmission line. 1236782 ------ 6. Flat patented flexible circuit board structure with patent application scope and screen mosquito plane layer, including surface and: t :: insulation section, each insulation section has 4: 3, and the two ends of each insulated section form the first: end 1 insulated section, each insulated section is formed by stacking one on top of the other-a multi-layered arrangement, each line is provided with a line of 'each-pair' The differential mode signal transmission line is: the first end of the transmission section extends to the second end; & ... the direction is from the insulation to several shielding plane layers, which are arranged in the adjacent insulation section. The distance between each predetermined gate extension differential mode signal transmission line in the marginal zone is 拄 ^, and the shielding plane layer provides the impedance value of —2—. The circuit board structure described in item 5 of the scope, in which _shield plane 厗 # is a flat soft layer. -Middle-Haiping or Thousand-face layer is a net-shaped shield plane 7. = Applicable patent scope No. 5 It has a shield plane. Circuit board structure, where the shield plane layer is and S ”type soft, domain shield Facing the respective opening region: cis! The insulation area of the differential mode signal transmission wheel line in several openings 6. Scope of patent application 8. If the patent application scope is No. 5, the circuit board structure is ‘where each of the HI-side / flat flat soft differential mode signal transmission lines is also equipped with’ ’. &, In addition to the configuration line. One less common mode signal transmission wheel 9 · A flat dry flexible circuit board structure with a shielded plane ^ with a ·, including a first connector having signal contacts; to / corresponding first connection, basin Head / At least one extended insulation ° There are signal contacts; and all are master, & slave, female and one insulation section are all right cage and first surface, and each of the insulation sections: 1st 2nd End, each of the insulation sections is stacked on top of each other to form a terminal J insulation section; 7 into a plurality of layers 3; each of the insulation sections is configured with at least one pair of differential wedge wires, and each-pair of differential mode signal transmission lines Extending from the first end to the second end of a horizontal direction segment; the direction is defined by the plurality of shielding plane layers, which are arranged in the multilayer insulation region phase, between the insulation segments, and with the differential mode signal transmission line The predetermined distance is guaranteed, and the impedance value of each differential mode signal transmission wheel 2 is provided by the shielding plane layer. Line 1 〇 The flat flexible circuit board structure with a shield plane layer as described in item 9 of the scope of patent application, wherein each shield plane layer is a mesh shield plane Page 16! 236782 '、、 Scope of patent application The U-shaped two-board structure with a shield plane as described in item 9 of the patent application scope of the Thunder, where the shielded plane layers of each shielded soft: hole area, each of which is happy: The extended side of the differential-mode signal transmission line follows the ^ u old-fashioned structure with a shielding plane layer described in item 9 of the 12Ht patent scope, where the first end of the insulated section is! Soft: There is an expanded section to make the differential end in the insulated section more enclose to the corresponding signal contact of the connector. . The 13 characteristics of the broken transmission line are as described in the electric application: extension special: L range item 9 with a flat type with a shield plane layer .. board, ·, σ structure, in which the interior of the insulation section except In addition to the transmission line, at least one common-mode signal transmission-differential mode signal is also provided. Page 17