CN201550352U - Flexible PCB and LCM employing same - Google Patents
Flexible PCB and LCM employing same Download PDFInfo
- Publication number
- CN201550352U CN201550352U CN2009201342392U CN200920134239U CN201550352U CN 201550352 U CN201550352 U CN 201550352U CN 2009201342392 U CN2009201342392 U CN 2009201342392U CN 200920134239 U CN200920134239 U CN 200920134239U CN 201550352 U CN201550352 U CN 201550352U
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- printed circuit
- circuit board
- kink
- flexible printed
- windowing
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Abstract
The utility model discloses a flexible PCB and a LCM employing the flexible PCB. The flexible PCB comprises a substrate layer, a protective layer and at least two conducting layers arranged between the substrate layer and the protective layer, the flexible PCB is also provided with a bent part, a window is machined on the protective layer corresponding to the bent part, the width of the window is less than the width of the bent part. The flexible PCB and the LCM employing the flexible PCB have higher reliability.
Description
Technical field
The utility model relates to a kind of flexible printed circuit board and adopts the liquid crystal display module of this flexible printed circuit board.
Background technology
Flexible printed circuit board (FPC, Flexible Printed Circuit) is a kind of flexible wiring board that uses polyimides (PI) or polyester film as acceptable substrate.Flexible printed circuit board and common printed circuit board (PCB) (PCB, Printed Circuit Board) are compared, and have in light weight, thin thickness, be convenient to the three-dimensional assembling in folding back and can bear repeatedly dynamically characteristics such as flex motion.Because the above-mentioned advantage of flexible printed circuit board in recent years, has obtained using widely in the middle of consumer electronics products such as mobile phone, notebook computer, PDA.Normal and the common printed circuit board (PCB) of flexible printed circuit board is connected realizes electric function.
Please refer to Fig. 1, Fig. 1 is in the prior art, a kind of three-dimensional decomposition texture schematic diagram that adopts flexible printed circuit board as the liquid crystal display module of interface unit.This liquid crystal display module 1 comprise a display panels 11 with display surface (indicate), one and module backlight 14, the printed circuit board (PCB) 13 and at these module backlight 14 back sides of these display panels 11 stacked settings be connected the flexible printed circuit board 12 between this display panels 11 and this printed circuit board (PCB) 13.Because this flexible printed circuit board 12 needs to cross over this module 14 backlight, so this flexible printed circuit board 12 need bend to this module backlight 14 back sides.
Please refer to Fig. 2, Fig. 2 is the side structure schematic diagram of flexible printed circuit board 12 shown in Figure 1.This flexible printed circuit board 12 comprises a substrate layer 123, the conductive layer 121,122 of two protective layers (not indicating) and two between this substrate layer 123 and protective layer.All adopt the colloid bonding fixing between each layer.This substrate layer 123 plays the carrying effect.This conductive layer 121,122 comprises through etch processes and many conducting wires forming, is used to install the pad of components and parts etc.This is protective layer used in this conductive layer 121,122 of protection, make it avoid carrying out unnecessary contact with the external world and be short-circuited, bad problem such as burn into is peeled off.
Please in conjunction with please refer to Fig. 3, Fig. 3 is the planar structure schematic diagram of flexible printed circuit board 12 shown in Figure 2 again.This flexible printed circuit board 12 comprises first connecting portion 131 at these flexible printed circuit board 12 1 ends, the kink 133 of second connecting portion 132 and between this first connecting portion 131 and second connecting portion 132 at the relative other end of this this flexible printed circuit board 12.This first connecting portion 131 is respectively applied for second connecting portion 132 and is connected this this printed circuit board (PCB) 13 and this display panels 11, and this flexible printed circuit board 12 is mainly at these kink 133 location bendings.The width of this first connecting portion 131 is different with the width of this second connecting portion 132, and the edge of these kink 133 both sides is oblique line, make the width of this kink 133 by this first connecting portion 131 to second connecting portion 132 transition gradually.This protective layer windows 134 to should kink 133 having one, and this width of 134 of windowing is consistent with this kink 133, makes this protective layer disconnect fully and do not link to each other at this kink 133.
Referring again to Fig. 1; because this kink 133 often contacts with the glue frame of module 11 backlight; in addition position that should kink 133 is not provided with this protective layer and only has this substrate layer 123; therefore this kink 133 both sides of the edge are very easy ruptures; cause these flexible printed circuit board 12 reliabilities lower, also can cause this liquid crystal display module 1 reliability lower simultaneously.
The utility model content
In order to solve the lower problem of prior art flexible printed circuit board reliability, the utility model provides a kind of reliability higher flexible printed circuit board.
In order to solve the lower problem of prior art liquid crystal display module reliability, the utility model provides a kind of reliability higher liquid crystal display module.
A kind of flexible printed circuit board; it comprises a substrate layer, the conductive layer of a protective layer and at least two between this substrate layer and protective layer; this flexible printed circuit board has a kink; this protective layer has position that should kink windows, and this width of windowing is less than the width of this kink.
Preferably, this distance of windowing edge and this flexible printed circuit board edge is greater than or equal to 0.5mm.
Preferably, the edge of these kink both sides is an oblique line, makes the width of this kink reduce gradually.
Preferably, this area of windowing is less than the area of this kink.
Preferably, this conductive layer comprises two conductive layers, and this two conductive layers branch is located at this substrate layer both sides, and therebetween with colloid bonding, and the conductive layer that closes on this windowed regions comprises equally and windowing.
A kind of liquid crystal display module; it comprise a display panels, one and module backlight, the printed circuit board (PCB) and at this module backlight back side of the stacked setting of this display panels be connected the flexible printed circuit board between display panels and the printed circuit board (PCB); this flexible printed circuit board comprises a substrate layer, the conductive layer of a protective layer and at least two between this substrate layer and protective layer; this flexible printed circuit board has a kink; this protective layer has position that should kink windows, and this width of windowing is less than the width of this kink.
Preferably, this distance of windowing edge and this flexible printed circuit board edge is greater than or equal to 0.5mm.
Preferably, the edge of these kink both sides is an oblique line, makes the width of this kink reduce gradually.
Preferably, this area of windowing is less than the area of this kink.
Preferably, this conductive layer comprises two conductive layers, and with colloid bonding, and the conductive layer that closes on this windowed regions comprises equally and windowing between this two conductive layer.
The utility model flexible printed circuit board is at the width of windowing at this kink place width less than this kink; make protective layer not disconnect fully in the position of this kink; but still remain with the protective layer pattern in the part at this kink edge; the thickness and the intensity at kink edge have been guaranteed; therefore the kink of this flexible printed circuit board is when object contacts; the difficult fracture, and then make that this flexible printed circuit board reliability is higher.
The utility model liquid crystal display module since this flexible printed circuit board at the width of windowing at this kink place width less than this kink; make protective layer not disconnect fully in the position of this kink; but still remain with the protective layer pattern in the part at this kink edge; the thickness and the intensity at kink edge have been guaranteed; therefore the kink of this flexible printed circuit board is when contacting with the objects such as glue frame of this module backlight; the difficult fracture, and then make that this liquid crystal display module reliability is higher.
Description of drawings
Fig. 1 is a kind of structural representation that adopts flexible printed circuit board as the liquid crystal display module of interface unit in the prior art.
Fig. 2 is the side structure schematic diagram of flexible printed circuit board shown in Figure 1.
Fig. 3 is the planar structure schematic diagram of flexible printed circuit board shown in Figure 2.
Fig. 4 is the three-dimensional decomposition texture schematic diagram of the utility model liquid crystal display module one better embodiment.
Fig. 5 is the side structure schematic diagram of flexible printed circuit board shown in Figure 4.
Fig. 6 is the planar structure schematic diagram of flexible printed circuit board shown in Figure 5.
Embodiment
Please refer to Fig. 4, Fig. 4 is the three-dimensional decomposition texture schematic diagram of the utility model liquid crystal display module one better embodiment.This liquid crystal display module 2 comprise a display panels 21 with display surface (indicate), one and module backlight 24, the printed circuit board (PCB) 23 and at these module backlight 24 back sides of these display panels 21 stacked settings be connected the flexible printed circuit board 22 between display panels 21 and the printed circuit board (PCB) 23.Because this flexible printed circuit board 22 needs to cross over this module 24 backlight, so this flexible printed circuit board 22 need bend to this module backlight 24 back sides.
Please refer to Fig. 5, it is the side structure schematic diagram of flexible printed circuit board 22 shown in Figure 4.This flexible printed circuit board 22 comprises a substrate layer 223, one first conductive layer 221 and is positioned at second conductive layer 222 on these substrate layer 223 another surfaces.Away from these substrate layer 223 sides are individual a protective layer (indicating) is set in this first conductive layer 221 and this second conductive layer 222, and all uses colloid bonding between each layer.This substrate layer 223 plays the carrying effect, and its material can be polyimides (PI) or polyester.This two conductive layer 221,222 comprises through etch processes and many conducting wires forming, is used to install the pad of components and parts etc.The material of this conductive layer 223 is a Copper Foil, as calendering copper and cathode copper.This is protective layer used in this two conductive layer 221,222 of protection, make it avoid carrying out unnecessary contact with the external world and be short-circuited, bad problem such as burn into is peeled off.The material of this protective layer can be epoxy resin or polyethylene etc.
Please refer to Fig. 6, it is the planar structure schematic diagram of flexible printed circuit board 22 shown in Figure 5.This flexible printed circuit board 22 comprises first connecting portion 231 at these these flexible printed circuit board 22 1 ends, the kink 233 of second connecting portion 232 and between this first connecting portion 231 and second connecting portion 232 at the relative other end of this this flexible printed circuit board 22.This first connecting portion 231 is used to connect this display panels 21, and this second connecting portion 232 is used to connect this printed circuit board (PCB) 23.This flexible printed circuit board 22 is mainly at these kink 233 location bendings.The width of this first connecting portion 231 is greater than the width of this second connecting portion 232, and the edge of these kink 233 both sides is oblique line, makes the width of this kink 233 be reduced gradually to second connecting portion 232 by this first connecting portion 231.
This protective layer has position that should kink 233 windows 234.This area of 234 of windowing is less than the area of this kink 233, and is positioned at the centre of this kink 233.This 234 width width of windowing less than this kink 233, make that the mutually close side 236 of this window each side 235 of 234 and this kink 233 is parallel, and the distance between the mutually close side 236 of this window each side 235 of 234 and this kink 233 is greater than or equal to 0.5mm.Make this protective layer not disconnect fully like this, but still remain with the protective layer pattern in the part at these kink 233 edges in the position of this kink 233.
The utility model liquid crystal display module 2 since this flexible printed circuit board 22 at 234 width the width of windowing at these kink 233 places less than this kink 233; make protective layer not disconnect fully in the position of this kink 233; but still remain with the protective layer pattern in the part at these kink 233 edges; the thickness and the intensity at kink 233 edges have been guaranteed; therefore the kink 233 of this flexible printed circuit board 22 is when contacting with the objects such as glue frame of this module 24 backlight; the difficult fracture, and then make that this flexible printed circuit board 22 is all higher with these liquid crystal display module 2 reliabilities.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; have in the technical field under any and know the knowledgeable usually; in not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection range of the present utility model is worked as with being as the criterion that claim was defined.
Claims (10)
1. flexible printed circuit board; it comprises a substrate layer, the conductive layer of a protective layer and at least two between this substrate layer and protective layer; this flexible printed circuit board has a kink; this protective layer has position that should kink windows, and it is characterized in that: this width of windowing is less than the width of this kink.
2. flexible printed circuit board according to claim 1 is characterized in that: this distance of windowing edge and this flexible printed circuit board edge is greater than or equal to 0.5mm.
3. flexible printed circuit board according to claim 1 is characterized in that: the edge of these kink both sides is an oblique line, makes the width of this kink reduce gradually.
4. flexible printed circuit board according to claim 1 is characterized in that: this area of windowing is less than the area of this kink.
5. flexible printed circuit board according to claim 1 is characterized in that: this conductive layer comprises two conductive layers, and this two conductive layers branch is located at this substrate layer both sides, and therebetween with colloid bonding, and the conductive layer that closes on this windowed regions comprises equally and windowing.
6. liquid crystal display module; it comprises a display panels; one with the module backlight of the stacked setting of this display panels; one printed circuit board (PCB) and at this module backlight back side is connected the flexible printed circuit board between display panels and the printed circuit board (PCB); this flexible printed circuit board comprises a substrate layer; the conductive layer of one protective layer and at least two between this substrate layer and protective layer; this flexible printed circuit board has a kink; this protective layer has position that should kink windows, and it is characterized in that: this width of windowing is less than the width of this kink.
7. liquid crystal display module according to claim 6 is characterized in that: this distance of windowing edge and this flexible printed circuit board edge is greater than or equal to 0.5mm.
8. liquid crystal display module according to claim 6 is characterized in that: the edge of these kink both sides is an oblique line, makes the width of this kink reduce gradually.
9. liquid crystal display module according to claim 6 is characterized in that: this area of windowing is less than the area of this kink.
10. liquid crystal display module according to claim 6 is characterized in that: this conductive layer comprises two conductive layers, and with colloid bonding, and the conductive layer that closes on this windowed regions comprises equally and windowing between this two conductive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201342392U CN201550352U (en) | 2009-07-27 | 2009-07-27 | Flexible PCB and LCM employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201342392U CN201550352U (en) | 2009-07-27 | 2009-07-27 | Flexible PCB and LCM employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201550352U true CN201550352U (en) | 2010-08-11 |
Family
ID=42605535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201342392U Expired - Lifetime CN201550352U (en) | 2009-07-27 | 2009-07-27 | Flexible PCB and LCM employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201550352U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104302093A (en) * | 2013-07-18 | 2015-01-21 | 三星显示有限公司 | Flexible printed circuit film and display device including the same |
| CN104869749A (en) * | 2015-04-17 | 2015-08-26 | 麦克思股份有限公司 | Electronic device |
| CN105242802A (en) * | 2014-07-09 | 2016-01-13 | 宸鸿科技(厦门)有限公司 | Touch module and flexible circuit board thereof |
| CN105611714A (en) * | 2015-12-31 | 2016-05-25 | 武汉天马微电子有限公司 | Flexible printed circuit board and display device |
| CN105825773A (en) * | 2015-01-26 | 2016-08-03 | 三星显示有限公司 | Display apparatus and method for manufacturing the same |
-
2009
- 2009-07-27 CN CN2009201342392U patent/CN201550352U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104302093A (en) * | 2013-07-18 | 2015-01-21 | 三星显示有限公司 | Flexible printed circuit film and display device including the same |
| CN105242802A (en) * | 2014-07-09 | 2016-01-13 | 宸鸿科技(厦门)有限公司 | Touch module and flexible circuit board thereof |
| CN105242802B (en) * | 2014-07-09 | 2018-08-07 | 宸鸿科技(厦门)有限公司 | Touch-control module and its flexible circuit board |
| CN105825773A (en) * | 2015-01-26 | 2016-08-03 | 三星显示有限公司 | Display apparatus and method for manufacturing the same |
| CN104869749A (en) * | 2015-04-17 | 2015-08-26 | 麦克思股份有限公司 | Electronic device |
| CN104869749B (en) * | 2015-04-17 | 2018-02-27 | 麦克思股份有限公司 | Electronic installation |
| CN105611714A (en) * | 2015-12-31 | 2016-05-25 | 武汉天马微电子有限公司 | Flexible printed circuit board and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100811 |
|
| CX01 | Expiry of patent term |