CN101043792A - Flexible PCB embedded in portable terminal machine and its manufacturing method - Google Patents
Flexible PCB embedded in portable terminal machine and its manufacturing method Download PDFInfo
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- CN101043792A CN101043792A CN 200610024996 CN200610024996A CN101043792A CN 101043792 A CN101043792 A CN 101043792A CN 200610024996 CN200610024996 CN 200610024996 CN 200610024996 A CN200610024996 A CN 200610024996A CN 101043792 A CN101043792 A CN 101043792A
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- circuit board
- flexible printed
- printed circuit
- pattern
- portable terminal
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Abstract
The related flexible PCB built-in a portable terminal machine comprises two layer copper foil of some thickness on two sides, a center layer with multiple circuit patterns on one side, two connection patterns on another side ends, and a sealing pattern between connection patterns. This invention improves portable terminal inner structure and guarantees the terminal EMI effect.
Description
Technical field
The present invention relates to be built in the flexible printed circuit board and the manufacture method thereof of portable terminal computer, relate in particular to display part when main frame is carried out sliding action, can be increased in the substrate service time of main frame interior curve, and guarantee that effectively electromagnetic wave cuts off and the flexible printed circuit board structure and the manufacture method thereof of communications reception sensitivity.
Background technology
Generally speaking, at the main frame of small personal computers,, use flexible printed circuit board for the signal with electricity conveys to the display part that is provided with in rotatable or removable mode.In addition, the fixed body of the CD drive that is provided with at the shell of small personal computers main frame movably is provided with, also for and the moving body-pallet of the CD of packing between the signal of telecommunication pass on, will use flexible printed circuit board.Here, will be that example describes with portable terminal computer-PDA (palmtop PC).
(Personal Digital Assistant: the personal digital assistant) communication instrument or the information-storing device that can simply carry as the user roughly is divided into main frame portion and the display part that shows main frame portion image transmitted information for mobile phone or PDA.
If describe in detail, above-mentioned main frame portion is equipped with the keypad that the user imports certain instruction and is provided with is the main PCB of carrying out by the control part of above-mentioned keypad input instruction.In addition, at above-mentioned display part, the liquid crystal panel of displays image information at any time is housed.Simultaneously, the main PCB of above-mentioned main frame portion is to be connected with flexible printed circuit board with above-mentioned liquid crystal panel, gives above-mentioned display part transmission power supply and picture signal from above-mentioned main PCB.Here, for the power supply of the above-mentioned display part of ON/OFF, be suitable for up and down or the mode slided in the front of above-mentioned main frame portion of left and right directions, or be suitable for folding mode main frame portion.In addition, the connecting portion of connection main PCB that causes in order to prevent to carry out the on/off operation of above-mentioned display part repeatedly and the PCB of LCD is impaired, uses the flexible printed circuit board with certain bending force.
Simultaneously, along with the miniaturization and the ultra-thinization trend of portable terminal computer, it is thinner that the thickness of terminating machine also becomes recently.Therefore, the flexible printed circuit board that is built in above-mentioned terminating machine is necessary to use not only its very thin thickness, and the made that can bear certain bending force.Such as, be example with PDA or mobile phone, the main collapsible and display part that uses folding display part to main frame portion with up and down or the mode of left and right directions slip.Therefore, in main frame inside, when above-mentioned display part slided, the flexible printed circuit board that connects above-mentioned display part and main frame portion was also crooked simultaneously.
The flexible printed circuit board that is built in the portable terminal computer of prior art is to handle one side or two-sided to be coated with silver, so that have that electron waves cut off and the static discharge effect time, have certain bendability.
But use the flexible printed circuit board of the prior art of aforesaid way to test, caused bigger problem at bendability.That is to say that the display part that slides repeatedly carries out the bendability test result of flexible printed circuit board, the problem that its substrate is impaired just occurred in the slip about 60,000 times.
Summary of the invention
The present invention proposes for addressing the above problem just, its purpose is to provide a kind of structure of improving flexible printed circuit board, so that promote the bendability of circuit board, providing can be easily by impaired flexible printed circuit board that is built in portable terminal computer and manufacture method thereof.
Simultaneously, other purpose is, provides a kind of and can effectively guarantee the Electro Magnetic Compatibility of portable terminal computer and the flexible printed circuit board that is built in portable terminal computer and the manufacture method thereof of communications reception sensitivity and static discharge.
To achieve these goals, the flexible printed circuit board that is built in portable terminal computer of the present invention comprises following several sections: two sides, and the Copper Foil of foliation one thickness, and form the central core of a plurality of circuit patterns in the one side; The connection pattern that forms at the both ends, another side of above-mentioned central core; Foil the seal pattern between the above-mentioned connection pattern.
In addition, the manufacture method that is built in the flexible printed circuit board of portable terminal computer of the present invention to achieve these goals comprises following several steps: the Copper Foil with etching elimination two sides copper clad laminate one side middle body forms the step that connects pattern in two end; Utilize the sputter foliation, in the step of the part foliation seal pattern of above-mentioned elimination Copper Foil; In the end side of above-mentioned two sides copper clad laminate, the step of the connector of packing into.
Because of above-mentioned formation, has the effect of the reliability of the flexible printed circuit board that can guarantee to be built in portable terminal computer really.
Effect of the present invention:
Have the flexible printed circuit board that is built in portable terminal computer of above formation and the effect of manufacture method thereof and be, be built in the portable terminal computer that is tending towards miniaturization and ultra-thinization, can promote its inner formation, and guarantee the Electro Magnetic Compatibility that terminating machine is emitted.
In addition, also have the communications reception sensitivity that not only obviously improves portable terminal computer, also make generation of static electricity reach minimized additional effect.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the side schematic view of substrate state of the portable terminal computer of built-in flexible printed circuit board of the present invention.
Fig. 2 is the side schematic view of the display part sliding mode of above-mentioned portable terminal computer.
Fig. 3 is the front schematic view of flexible printed circuit board structure of the present invention.
Fig. 4 to Fig. 7 is the sectional view along the I-I ' cutting of Fig. 3 as flexible printed circuit board manufacture process schematic diagram of the present invention.
The symbol description of major part in the accompanying drawing:
10: portable terminal computer 11: main frame portion
12: display part 20: flexible printed circuit board
21: circuit pattern 22: central core
23: upper membrane 24: lower film
25: connect pattern 26: etching face
27: seal pattern 30: connector
Embodiment
Below with reference to accompanying drawings, describe the flexible printed circuit board of portable terminal computer and the specific embodiment of manufacture method thereof of being built in of the present invention in detail.But can not think to be confined to the embodiment that the technology of the present invention thought embodies, those skilled in the art fully can appending, change, deleting other invention that proposes to regress or belonging to the technology of the present invention thought range with other interior embodiment according to other factors.
Fig. 1 is the side schematic view of substrate state of the portable terminal computer of built-in flexible printed circuit board of the present invention, and Fig. 2 is the side schematic view of the display part sliding mode of above-mentioned portable terminal computer.
If see figures.1.and.2, as an embodiment of the portable terminal computer 10 of built-in flexible printed circuit board 20 of the present invention, the PDA that is suitable for sliding type is with main frame portion 11 and is contained in the front of above-mentioned main frame portion 11, so that slidably display part 12 constitutes.
Specifically, above-mentioned main frame portion 11 comprises the main PCB 111 of the command signal that the button portion 112 of user input instruction and transmission are imported by the operation of above-mentioned button portion 112 and overleaf, with the battery installation section 113 of reassembling type in conjunction with battery.In addition, be example with terminating machine 10 with camera function, small-sized image pickup head 114 and lens 115 etc. also can be installed.Here, what spell out is according to design conditions, and camera 114 also might be installed in above-mentioned display part 12.
In addition, above-mentioned display part 12 also has with a certain size and is installed in face portion, the liquid crystal panel portion 121 of display text or image and the button portion 122 of user input instruction etc.Simultaneously, the PCB of LCD is equipped with, so that by above-mentioned liquid crystal panel portion's 121 display texts or picture signal etc. in the back side in above-mentioned liquid crystal panel portion 121.
Connect above-mentioned main PCB 111 and above-mentioned display part 12 by above-mentioned flexible printed circuit board 20.Specifically, along the pattern circuit that forms at above-mentioned flexible printed circuit board 20, the instruction of button portion 122 inputs from the above-mentioned display part 12 is transferred to above-mentioned main PCB 111, and the signal of the electricity of perhaps above-mentioned main PCB 111 outputs is transferred to above-mentioned liquid crystal panel portion 121.
In addition, from the characteristics of above-mentioned flexible printed circuit board 20, because of can be than being easier to bending, even above-mentioned display part 12 is slided, above-mentioned flexible printed circuit board 20 can be not impaired yet, and the signal of electricity can be transferred to main PCB 111 and display part 12 by above-mentioned flexible printed circuit board 20.
Fig. 3 is the front schematic view of flexible printed circuit board structure of the present invention.
If with reference to Fig. 3, flexible printed circuit board 20 of the present invention is mounted connector 30 in the above, thereby main PCB connects above-mentioned connector 30.
Specifically, above-mentioned flexible printed circuit board 20 is arranged with a plurality of circuit patterns 21 in the above, and the end of foregoing circuit pattern 21 is the terminals 31 that connect with welding above-mentioned connector 30.Above-mentioned connector 30 is to stick on above-mentioned flexible printed circuit board 20 with surface mounting technology (Surface Mounting Technology).Above-mentioned connector 30 is installed in the place with a certain distance from the end of above-mentioned flexible printed circuit board 20.On the end and the space between the connector 30 of above-mentioned flexible printed circuit board 20, there is foregoing circuit pattern 21 to be bent to form.In addition, the part that foregoing circuit pattern 21 is bent to form is to above-mentioned connector 30 back side bendings, thereby sticks on the back side of above-mentioned flexible printed circuit board 20.Therefore, the effect that has the plot ratio reduction of the above-mentioned flexible printed circuit board 20 that is installed in portable terminal computer inside.
To the main frame portion of above-mentioned flexible printed circuit board 20, the long part that prolongs longways in the below of promptly above-mentioned connector 30 is in terminating machine inside, because of display part 12 with up and down or left and right directions slide crooked.Specifically, above-mentioned flexible printed circuit board 20 is characterised in that, can be according to the display part 12 of portable terminal computer 10 mobile and impaired, can return to original state than being easier to crooked the time.
With accompanying drawing, when detailed description is promoted the bendability of above-mentioned flexible printed circuit board 20, also can guarantee the manufacture method of its inner flexible printed circuit board that constitutes below.
Fig. 4 to Fig. 7 is the sectional view along the I-I ' cutting of Fig. 3 as flexible printed circuit board manufacture process schematic diagram of the present invention.
If with reference to Fig. 4 to Fig. 7,, at first prepare copper clad laminate (Copper Clad Laminate Film) in order to make flexible printed circuit board 20 of the present invention.The formation of copper clad laminate comprises to be insulating material, is again the central core 22 that constitutes of the polyimides (PI) of polymer substance, copper film is sprayed on the upper membrane 23 of a side of above-mentioned central core 22, copper film is sprayed on the lower film 24 of the another side of above-mentioned central core 22.
Specifically, except the definite part at two ends, eliminate the copper (Cu) that forms above-mentioned upper membrane 23, connect pattern 25 thereby form by the etching engineering.In addition, by the etching engineering of general exposure method, make and form a plurality of circuit patterns 21 on the above-mentioned lower film 24.And make it also form at least more than one the through hole (through hole) that connects above-mentioned central core 22, thereby, more than one circuit pattern is interconnected with the above-mentioned pattern 25 that is connected by through hole (through hole).
In addition,,, thereby cover the above-mentioned central core 22 that spills, form the seal pattern (sealed pattern) 27 on the etching face 26 by sputtering method foliation silver (Ag) or nickel materials such as (Ni) eliminating the etching face 26 in centre with the etching engineering.At this moment, the sealed pattern 27 in the certain field that connects pattern 25 tops is covered, so that carry out smooth conduction between above-mentioned connection pattern 25 and the seal pattern 27.
,, used sputtering method here, preferably should be suitable for the plasma sputtering mode as the method that forms above-mentioned seal pattern 27.
Specifically, vacuum plating roughly is divided into physical vapour deposition (PVD) (Physical Vapor Deposition:PVD) mode and chemical vapour deposition (CVD) (Chemical Vapor Deposition:CVD) mode.Above-mentioned physical vapour deposition (PVD) mode can also be divided into does not use isoionic general PVD, promptly is called as the electric resistor heating type electro-plating method of Evaporation (evaporation) and uses isoionic PAPVD (Plasma assisted PVD).In addition, above-mentioned PAPVD also can be divided into sputter and ion plating (Ion Plating) according to the method that produces target (Target) (plated material) steam.
Above-mentioned sputter is meant high energy particle is conflicted with surface of solids generation that the atom of target (Target) material utilizes the perfectly elastic impact positive energy exchange, the method that spills to the surface.Specifically, in keeping the container of vacuum, overflow inert substance-argon gas, thereby apply DC power supply for target (Target) with (cathode) sputtering gas, cause will foliation substrate and target (Target) between produce plasma.In such plasma, argon gas is carried out ionization by high output DC field, becomes cation.In addition, the argon gas cation spills the atom and molecule of target (Target) because of DC electric field.Like this, the phenomenon that spilt of target (Target) material is called sputter.The outstanding of above-mentioned sputtering method is characterised in that, the evaporation of foliation material is moved and is not to belong to chemistry or thermal process (chemical or thermal process), but belong to physics power exchange process (Physical momentumexchange process), therefore, nearly all material can be used as target (Target).In addition, above-mentioned sputter foliation mode has, ion beam sputtering mode and magnetron sputtering mode, direct current 2 utmost point sputters and high-frequency sputtering mode.
Simultaneously, for above-mentioned seal pattern 27 foliations are arrived above-mentioned flexible printed circuit board 20, be suitable for and utilize isoionic sputtering method, this becomes a key character of the present invention.That is to say, be example with the prior art, and when making flexible printed circuit board 20 have certain bendability, the electron gain ripple cuts off and the static discharge effect, has carried out being coated with silver in the one side.Therefore, prior art is impossible use above-mentioned and so on sputtering method, does not also require to be suitable for sputtering method.But in order to overcome the defective that produces by on the flexible printed circuit board that is coated with silver-colored manufactured 20 of prior art, the present invention proposes, and makes a side of flexible printed circuit board 20 form seal pattern 27, also in order to form above-mentioned seal pattern 27, has proposed sputtering method.
If sum up, make the technological thought that forms seal pattern 27 on the flexible printed circuit board 20 of the present invention and in order to form above-mentioned seal pattern 27, the technological thought that is suitable for sputtering method all belongs to feature of the present invention.
In addition, such as described above, after etching face 26 forms seal pattern 27, make above-mentioned connector 30 roughly be installed in the end of the lower film 24 of above-mentioned flexible printed circuit board 20 with sputtering method.
As mentioned above, one side of etching flexible printed circuit board 20, and, form seal pattern 27 with sputter foliation method at its etching face 26, thereby the thickness with flexible printed circuit board 20 is than the thinner strong point of prior art the time, increases the reliability that the bending of flexible printed circuit board 20 causes.Also has the EMC of guaranteeing (electromagnetic compatibility: Electro Magnetic Compatibility), and be easy to guarantee the strong point of communications reception sensitivity.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (11)
1, a kind of flexible printed circuit board that is built in portable terminal computer is characterized in that comprising that following several sections constitutes:
Two sides, foliation has the Copper Foil of a thickness, and forms the central core of a plurality of circuit patterns in the one side;
The connection pattern that forms at the both ends, another side of above-mentioned central core;
Foil the seal pattern between the above-mentioned connection pattern.
2, the flexible printed circuit board that is built in portable terminal computer as claimed in claim 1 is characterized in that:
Described seal pattern is a part of eliminating above-mentioned Copper Foil with etching, thus the foliation remainder.
3, the flexible printed circuit board that is built in portable terminal computer as claimed in claim 1 is characterized in that:
Described seal pattern is with the sputtering method foliation.
4, the flexible printed circuit board that is built in portable terminal computer as claimed in claim 1 is characterized in that:
Field on described connection pattern top forms above-mentioned seal pattern, thereby forms and the conduction that is connected between pattern.
5, the flexible printed circuit board that is built in portable terminal computer as claimed in claim 1 is characterized in that:
Described seal pattern is to make with silver or nickel material.
6, the flexible printed circuit board that is built in portable terminal computer as claimed in claim 1 is characterized in that:
Form the through hole that connects described central core, and interconnect the foregoing circuit pattern and be connected pattern with above-mentioned through hole.
7, the flexible printed circuit board that is built in portable terminal computer as claimed in claim 1 is characterized in that also comprising:
Be installed in described flexible printed circuit board one side end, the connector that is connected with the foregoing circuit pattern.
8, a kind of flexible printed circuit board manufacture method that is built in portable terminal computer is characterized in that comprising that following several steps constitutes:
Copper Foil with etching elimination two sides copper clad laminate one side middle body forms the step that connects pattern in two end;
Utilize the sputter foliation, in the step of the part foliation seal pattern of above-mentioned elimination Copper Foil;
In the end side of above-mentioned two sides copper clad laminate, the step of mounted connector.
9, the flexible printed circuit board manufacture method that is built in portable terminal computer as claimed in claim 8 is characterized in that:
At the opposite side of described two sides copper clad laminate, form circuit pattern, at least one in the foregoing circuit pattern connects with the described pattern that is connected by through hole.
10, the flexible printed circuit board manufacture method that is built in portable terminal computer as claimed in claim 8 is characterized in that:
The step of described foliation seal pattern is the area foliation that utilizes seal pattern to cover with the part of above-mentioned connection layout case.
11, the flexible printed circuit board manufacture method that is built in portable terminal computer as claimed in claim 8 is characterized in that,
The step of the described seal pattern of foliation is the step of foliation silver or nickel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610024996 CN101043792A (en) | 2006-03-23 | 2006-03-23 | Flexible PCB embedded in portable terminal machine and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610024996 CN101043792A (en) | 2006-03-23 | 2006-03-23 | Flexible PCB embedded in portable terminal machine and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101043792A true CN101043792A (en) | 2007-09-26 |
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ID=38808900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610024996 Pending CN101043792A (en) | 2006-03-23 | 2006-03-23 | Flexible PCB embedded in portable terminal machine and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101043792A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088818A (en) * | 2009-12-08 | 2011-06-08 | 乐金显示有限公司 | Flexible printed circuit board, backlight unit using the same, and liquid crystal display device comprising the same |
| CN104232953A (en) * | 2014-09-18 | 2014-12-24 | 珠海市润星泰电器有限公司 | Preparation method of light metal alloy semi-solid slurry |
-
2006
- 2006-03-23 CN CN 200610024996 patent/CN101043792A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088818A (en) * | 2009-12-08 | 2011-06-08 | 乐金显示有限公司 | Flexible printed circuit board, backlight unit using the same, and liquid crystal display device comprising the same |
| CN102088818B (en) * | 2009-12-08 | 2014-11-12 | 乐金显示有限公司 | Flexible printed circuit board, backlight unit using the same, and liquid crystal display device comprising the same |
| CN104232953A (en) * | 2014-09-18 | 2014-12-24 | 珠海市润星泰电器有限公司 | Preparation method of light metal alloy semi-solid slurry |
| CN104232953B (en) * | 2014-09-18 | 2016-10-26 | 珠海市润星泰电器有限公司 | A kind of light metal alloy preparation method of semisolid state slurry thereof |
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