CN103698919A - Interface circuit with waterproof function - Google Patents
Interface circuit with waterproof function Download PDFInfo
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- CN103698919A CN103698919A CN201410009070.3A CN201410009070A CN103698919A CN 103698919 A CN103698919 A CN 103698919A CN 201410009070 A CN201410009070 A CN 201410009070A CN 103698919 A CN103698919 A CN 103698919A
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- shaped groove
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Abstract
The invention provides an interface circuit with a waterproof function. The interface circuit comprises a printed circuit board, a flexible circuit board, a connector and a waterproof material, wherein the flexible circuit board comprises a golden conductive contact piece; the connector comprises a U-shaped groove which is electrically connected with the printed circuit board through an outer side surface, and a connection part and a recessed part are arranged at the inner side surface opposite to the outer side surface; the flexible circuit board can be inserted into the U-shaped groove so that the golden conductive contact piece slides through the recessed part and is electrically connected to the connection part; the recessed part is filled with the waterproof material for sealing a gap between the golden conductive contact piece and the connection part. Compared with the prior art, the interface circuit has the characteristics that the gap between the golden conductive contact piece and the connection part is sealed by the waterproof material or a baffle plate so that liquid is prevented from permeating into the golden finger. Besides, when the flexible circuit board is provided with the baffle plate for positioning, the assembly firmness of the flexible circuit board with the U-shaped groove also can be improved, and therefore, the product percent of pass is increased.
Description
Technical field
The present invention relates to a kind of interface circuit for liquid crystal display, relate in particular to a kind of interface circuit with water-proof function.
Background technology
Along with the progress of optics science and technology with semiconductor technology, liquid crystal indicator (Liquid Crystal Display; LCD) be widely used in electronic product display device.Liquid crystal indicator product, especially portable product now, more and more trend towards the project organization frivolous, short and small, weight is few, so new material and package technique are constantly weeded out the old and bring forth the new.For example, cover brilliant thin film technique (Chip On Film, COF).
In existing packaging technology, often backlight module, liquid crystal panel and polaroid are fitted together, one end of covering brilliant film is electrically connected to liquid crystal panel, then the other end and the printed circuit board (PCB) that cover brilliant film are pressed together.On the other hand, lifting day by day along with display quality demand, derived different modular design, and printed-wiring board (PWB) puts towards ground side-sway the main flow that design becomes market gradually, also just because of this, circuit board is when the design of ground side is easy to cause user's clean face plate, and cleaning solution flows into and causes golden finger short circuit along panel.
For said circumstances, client has increased cleaning solution test in quality management and control link, whether has liquid when testing cleaning solution wiping panel and flows into golden finger.Yet in existing process of the test, flexible PCB (Flexible Printed Circuit, FPC) laid particular emphasis on and emphasizes associativity with being connected of connector (Connector), and take and be difficult for departing from for mainly designing.For example, except adopting piano lid pressing, thereby also additionally increased ear, hook design lifting strength of joint.But between printed circuit board (PCB) and flexible PCB, existing gap can import golden finger by cleaning solution, causes short circuit.
In view of this, how to design a kind of interface circuit of novelty, or the design of existing flexible PCB and printed circuit board (PCB) is improved, the circuit reliability of improving product, is a person skilled problem urgently to be resolved hurrily in the industry.
Summary of the invention
The existing above-mentioned defect of Interface design for flexible PCB of the prior art and printed circuit board (PCB), the invention provides a kind of interface circuit with water-proof function.
According to one aspect of the present invention, a kind of interface circuit with water-proof function is provided, be suitable for a liquid crystal display, this interface circuit comprises:
One printed circuit board (PCB);
One flexible PCB, comprises a golden finger;
A connector, described connector comprises a U-shaped groove, described U-shaped groove is electrically connected and has a junction and a depressed part at the relative medial surface of described lateral surface with described printed circuit board (PCB) by a lateral surface, described U-shaped groove, in order to allow described flexible PCB to insert, makes described golden finger slip over described depressed part and is electrically connected to described connecting portion; And
One waterproof material, is filled in described depressed part, in order to the gap between golden finger described in block and described connecting portion.
In an embodiment therein, described golden finger position is in the lower surface of described flexible PCB, and when described flexible PCB inserts described U-shaped groove, described golden finger is electrically connected to described printed circuit board (PCB) by connecting portion and the described lateral surface of described U-shaped groove.
In an embodiment therein, the lower surface of described flexible PCB also comprises a liquid barrier, be positioned at described golden finger away from a side of described U-shaped groove, when described flexible PCB inserts described U-shaped groove, thereby described liquid barrier snaps in described depressed part, locate described flexible PCB.
In an embodiment therein, the length of installing position and described golden finger of described liquid barrier adapts.
In an embodiment therein, this liquid barrier is that the elastic material being electrically insulated forms.
According to another aspect of the present invention, a kind of interface circuit with water-proof function is provided, be suitable for a liquid crystal display, this interface circuit comprises:
One printed circuit board (PCB);
One flexible PCB, comprises a golden finger and a baffle plate, and described golden finger and described baffle plate are arranged at the same surface of described flexible PCB; And
A connector, described connector comprises a U-shaped groove, described U-shaped groove is electrically connected and has a junction at the relative medial surface of described lateral surface with described printed circuit board (PCB) by a lateral surface, described U-shaped groove is in order to allow described flexible PCB to insert, make described golden finger be electrically connected to described connecting portion, wherein, when described flexible PCB inserts described U-shaped groove, thereby described baffle plate is against described U-shaped groove free folding, in order to the gap between golden finger described in block and described connecting portion.
In an embodiment therein, described golden finger position is in the lower surface of described flexible PCB, and when described flexible PCB inserts described U-shaped groove, described golden finger is electrically connected to described printed circuit board (PCB) by connecting portion and the described lateral surface of U-shaped groove.
In an embodiment therein, described flexible PCB also comprises a waterproof material, is attached at the lower surface of described baffle plate, and this waterproof material flows into the gap between described golden finger and described connecting portion in order to prevent liquid.
In an embodiment therein, baffle plate comprises a stiff end and a free end, and the stiff end of this baffle plate is attached at described golden finger away from a side of described U-shaped groove, and the free end of this baffle plate is resisted against the edge that described connector contacts with described printed circuit board (PCB).
In an embodiment therein, the elastic material that this baffle plate is electrical isolation forms.
Adopt the interface circuit with water-proof function of the present invention, its flexible PCB comprises a golden finger, its connector comprises a U-shaped groove, this U-shaped groove is electrically connected and has a junction and a depressed part at the relative medial surface of lateral surface with printed circuit board (PCB) by a lateral surface, this U-shaped groove, in order to allow flexible PCB to insert, makes golden finger slip over depressed part and is electrically connected to connecting portion.This interface circuit also comprises a waterproof material, is filled in this depressed part and comes the gap between block golden finger and connecting portion, thereby prevent that such as cleaning solution, flowing into golden finger causes short circuit fault.Than prior art, the present invention sees through waterproof material or catch comes the gap between shutoff golden finger and connecting portion, thereby can avoid liquid to infiltrate golden finger.In addition, when flexible PCB arranges catch and positions, also can promote the assembling firmness between itself and U-shaped groove, increase product percent of pass.
Accompanying drawing explanation
Reader, after having read the specific embodiment of the present invention with reference to accompanying drawing, will become apparent various aspects of the present invention.Wherein,
Fig. 1 illustrates the decomposing schematic representation of front frame, liquid crystal panel and backlight module in a kind of liquid crystal display;
Fig. 2 illustrates according to one embodiment of the present invention, for liquid crystal display and have the structural representation of the interface circuit of water-proof function;
Fig. 3 illustrates the structural representation of alternative embodiment of the interface circuit with water-proof function of Fig. 2;
Fig. 4 illustrates according to another embodiment of the present invention, for liquid crystal display and have the structural representation of the interface circuit of water-proof function; And
Fig. 5 illustrates the structural representation of alternative embodiment of the interface circuit with water-proof function of Fig. 4.
Embodiment
For the technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, in accompanying drawing, identical mark represents same or analogous assembly.Yet those of ordinary skill in the art should be appreciated that the embodiment that hereinafter provided is not used for limiting the scope that the present invention is contained.In addition, accompanying drawing, only for being schematically illustrated, is not drawn according to its life size.
With reference to the accompanying drawings, the embodiment of various aspects of the present invention is described in further detail.
Fig. 1 illustrates the decomposing schematic representation of front frame, liquid crystal panel and backlight module in a kind of liquid crystal display.With reference to Fig. 1, this liquid crystal display comprises a front frame 100, a liquid crystal panel 102 and a backlight module (Backlight Unit, BLU) 104.In addition, one end of covering polycrystalline structure film 106 is electrically connected to liquid crystal panel 102, and the other end is electrically connected to printed-wiring board (PWB) (Printed Circuit Board Assembly, PCBA) 108.Printed circuit board (PCB) 108 also comprises a connector 110.
As mentioned before, circuit board is when the design of ground side is easy to cause user's clean face plate, and cleaning solution flows into and causes golden finger short circuit along panel.Although existing solution has increased the quality management and control for cleaning solution test, but stress to emphasize the connection reliability of flexible PCB and connector, take that to be difficult for departing from be main target, but do not eliminate well the short circuit condition that the gap because occurring between circuit board causes.
In order to eliminate above-mentioned defect of the prior art, Fig. 2 illustrates according to one embodiment of the present invention, for liquid crystal display and have the structural representation of the interface circuit of water-proof function.
As shown in Figure 2, in this embodiment, the interface circuit with water-proof function of the present invention comprises a flexible PCB (Flexible Printed Circuit, FPC) 200, one printed circuit board (PCB) 400, a connector and a waterproof material 305.
Specifically, flexible PCB 200 comprises a golden finger 202.This golden finger 202 is positioned at the lower surface of flexible PCB 200.Connector 30 comprises a U-shaped groove 30, and this U-shaped groove 30 is electrically connected by a lateral surface and printed circuit board (PCB) 400, and U-shaped groove 30 has a junction 303 and a depressed part 301 at the relative medial surface of its lateral surface.Preferably, golden finger 202 is positioned at the lower surface of flexible PCB 200, and when flexible PCB 200 inserts U-shaped groove 30, golden finger 202 slips over depressed part 301 and connecting portion 303 and lateral surface thereof by U-shaped groove 30 are electrically connected to printed circuit board (PCB) 400.
In addition, the left side of the upper trough rim of U-shaped groove 30 is piano lid pressing design, makes flexible PCB 200 tightr with the combination of connector.U-shaped groove 30 also allows flexible PCB 200 to insert, and the golden finger 202 that makes its below is electrically connected to printed circuit board (PCB) 400 by connecting portion 303 and the lateral surface of U-shaped groove 30.
It needs to be noted, the medial surface of the lower trough rim of this U-shaped groove 30 comprises above-mentioned depressed part 301.This depressed part 301 is filled with a waterproof material 305(as shown in the oblique line part in Fig. 2), such as water-absorption material or the material that blocks water.Thus, this interface circuit can block golden finger 202 by this waterproof material 305 and connecting portion 303 between gap, thereby avoid infiltrating golden finger such as liquid such as cleaning solutions, cause circuit to occur short trouble.
From the above, than prior art, the present invention can see through the waterproof material gap between shutoff golden finger and the connecting portion of U-shaped groove effectively, thereby can avoid liquid infiltration golden finger, avoid circuit because liquid to infiltrate caused short trouble, increase product reliability and qualification rate.
Fig. 3 illustrates the structural representation of alternative embodiment of the interface circuit with water-proof function of Fig. 2.
With reference to Fig. 3, in this alternative embodiment, than Fig. 2, the lower surface of flexible PCB 200 also comprises a liquid barrier 204.This liquid barrier 204 is positioned at golden finger 202 away from a side of U-shaped groove 30.When flexible PCB 200 inserts U-shaped groove 30, thereby liquid barrier 204 snaps in depressed part 301 location flexible PCBs 200.Therefore, the waterproof material that this interface circuit not only can see through in depressed part stops liquid to enter golden finger, but also can utilize the liquid barrier that snaps in depressed part to come further block liquid to infiltrate golden finger.Preferably, the length of installing position and golden finger 202 of liquid barrier 204 adapts.In addition, consider the function that snaps in of liquid barrier 204, it can be the elastic material being electrically insulated.
Fig. 4 illustrates according to another embodiment of the present invention, for liquid crystal display and have the structural representation of the interface circuit of water-proof function.
Be similar to Fig. 2, in the embodiment of Fig. 4, the interface circuit with water-proof function of the present invention comprises a flexible PCB (Flexible Printed Circuit, FPC) 200 ', one printed circuit board (PCB) 400 ' and a connector., different from Fig. 2, the interface circuit of Fig. 4 not improves for the connector of printed circuit board (PCB), but flexible PCB is improved, thereby promotes the water-proof function of interface circuit.
Specifically, flexible PCB 200 ' comprises a golden finger 202 ' and a baffle plate 206 ', and golden finger 202 ' and baffle plate 206 ' are arranged at the same surface of flexible PCB 200 ', such as lower surface.For example, the elastic material that baffle plate 206 ' is electrical isolation.This connector comprises a U-shaped groove 30.This U-shaped groove 30 is electrically connected and has a junction 303 ' at the relative medial surface of lateral surface with printed circuit board (PCB) 400 ' by a lateral surface.This U-shaped groove 30, in order to allow flexible PCB 400 ' to insert, makes golden finger 202 ' be electrically connected to connecting portion 303 '.In addition, the left side of the upper trough rim of U-shaped groove 30 can be piano lid pressing design, makes flexible PCB 200 ' tightr with the combination of U-shaped groove 30.
In addition, U-shaped groove 30, in order to allow flexible PCB 200 ' to insert, makes golden finger 202 ' be electrically connected to the connecting portion 303 ' of U-shaped groove 30.When flexible PCB 200 ' inserts U-shaped groove 30, thereby baffle plate 206 ' is against U-shaped groove free folding, with the gap between block golden finger 202 ' and connecting portion 303 '.
In one embodiment, baffle plate 206 ' comprises a stiff end and a free end.The stiff end of baffle plate 206 ' is attached at golden finger 202 ' away from a side of U-shaped groove 30, and the free end of baffle plate 206 ' is resisted against the edge that U-shaped groove 30 contacts with printed circuit board (PCB) 400 '.
From the above, than prior art, the baffle design that the present invention can see through flexible PCB lower surface gives the gap between shutoff golden finger and connecting portion, thereby can avoid liquid to infiltrate golden finger, avoid circuit because liquid to infiltrate caused short trouble, increase product reliability and qualification rate.
Fig. 5 illustrates the structural representation of alternative embodiment of the interface circuit with water-proof function of Fig. 4
With reference to Fig. 5, in this alternative embodiment, than Fig. 4, flexible PCB 200 ' also comprises a waterproof material 208 ', is attached at the lower surface of baffle plate 206 '.This waterproof material 206 ' flows into the gap between golden finger 202 ' and connecting portion 303 ' in order to further to prevent liquid.
Adopt the interface circuit with water-proof function of the present invention, its flexible PCB comprises a golden finger, its connector comprises a U-shaped groove, this U-shaped groove is electrically connected and has a junction and a depressed part at the relative medial surface of lateral surface with printed circuit board (PCB) by a lateral surface, this U-shaped groove, in order to allow flexible PCB to insert, makes golden finger be electrically connected to the connecting portion of U-shaped groove.This interface circuit also comprises a waterproof material, is filled in this depressed part, by this waterproof material, comes the gap between block golden finger and connecting portion, thereby prevents that such as cleaning solution, flowing into golden finger causes short circuit fault.Than prior art, the present invention sees through waterproof material or catch comes the gap between shutoff golden finger and connecting portion, thereby can avoid liquid to infiltrate golden finger.In addition, when flexible PCB arranges catch and positions, also can promote the assembling firmness between itself and U-shaped groove, increase product percent of pass.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, without departing from the spirit and scope of the present invention in the situation that, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replacement all drop in the claims in the present invention book limited range.
Claims (10)
1. an interface circuit with water-proof function, is suitable for a liquid crystal display, it is characterized in that, described interface circuit comprises:
One printed circuit board (PCB);
One flexible PCB, comprises a golden finger;
A connector, described connector comprises a U-shaped groove, described U-shaped groove is electrically connected and has a junction and a depressed part at the relative medial surface of described lateral surface with described printed circuit board (PCB) by a lateral surface, described U-shaped groove, in order to allow described flexible PCB to insert, makes described golden finger slip over described depressed part and is electrically connected to described connecting portion; And
One waterproof material, is filled in described depressed part, in order to the gap between golden finger described in block and described connecting portion.
2. the interface circuit with water-proof function according to claim 1, it is characterized in that, described golden finger position is in the lower surface of described flexible PCB, when described flexible PCB inserts described U-shaped groove, described golden finger is electrically connected to described printed circuit board (PCB) by connecting portion and the described lateral surface of described U-shaped groove.
3. the interface circuit with water-proof function according to claim 1, it is characterized in that, the lower surface of described flexible PCB also comprises a liquid barrier, be positioned at described golden finger away from a side of described U-shaped groove, when described flexible PCB inserts described U-shaped groove, thereby snapping in described depressed part, described liquid barrier locates described flexible PCB.
4. the interface circuit with water-proof function according to claim 3, is characterized in that, the length of installing position and described golden finger of described liquid barrier adapts.
5. the interface circuit with water-proof function according to claim 3, is characterized in that, this liquid barrier is that the elastic material being electrically insulated forms.
6. an interface circuit with water-proof function, is suitable for a liquid crystal display, it is characterized in that, described interface circuit comprises:
One printed circuit board (PCB);
One flexible PCB, comprises a golden finger and a baffle plate, and described golden finger and described baffle plate are arranged at the same surface of described flexible PCB; And
A connector, described connector comprises a U-shaped groove, described U-shaped groove is electrically connected and has a junction at the relative medial surface of described lateral surface with described printed circuit board (PCB) by a lateral surface, described U-shaped groove is in order to allow described flexible PCB to insert, make described golden finger be electrically connected to described connecting portion
Wherein, when described flexible PCB inserts described U-shaped groove, thereby described baffle plate is against described U-shaped groove free folding, in order to the gap between golden finger described in block and described connecting portion.
7. the interface circuit with water-proof function according to claim 6, it is characterized in that, described golden finger position is in the lower surface of described flexible PCB, when described flexible PCB inserts described U-shaped groove, described golden finger is electrically connected to described printed circuit board (PCB) by connecting portion and the described lateral surface of described U-shaped groove.
8. the interface circuit with water-proof function according to claim 6, it is characterized in that, described flexible PCB also comprises a waterproof material, is attached at the lower surface of described baffle plate, and this waterproof material flows into the gap between described golden finger and described connecting portion in order to prevent liquid.
9. the interface circuit with water-proof function according to claim 6, it is characterized in that, described baffle plate comprises a stiff end and a free end, the stiff end of described baffle plate is attached at described golden finger away from a side of described U-shaped groove, and the free end of described baffle plate is resisted against the edge that described connector contacts with described printed circuit board (PCB).
10. the interface circuit with water-proof function according to claim 6, is characterized in that, the elastic material that this baffle plate is electrical isolation forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410009070.3A CN103698919A (en) | 2014-01-08 | 2014-01-08 | Interface circuit with waterproof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410009070.3A CN103698919A (en) | 2014-01-08 | 2014-01-08 | Interface circuit with waterproof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103698919A true CN103698919A (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410009070.3A Pending CN103698919A (en) | 2014-01-08 | 2014-01-08 | Interface circuit with waterproof function |
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| Country | Link |
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| CN (1) | CN103698919A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456567A (en) * | 2019-08-06 | 2019-11-15 | 深圳市利航电子有限公司 | The golden finger break structure of backlight |
| CN111262062A (en) * | 2018-12-03 | 2020-06-09 | 东华镜月（苏州）纺织技术研究有限公司 | Slot structure for connecting sensing fabric and flexible circuit board |
-
2014
- 2014-01-08 CN CN201410009070.3A patent/CN103698919A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262062A (en) * | 2018-12-03 | 2020-06-09 | 东华镜月（苏州）纺织技术研究有限公司 | Slot structure for connecting sensing fabric and flexible circuit board |
| CN110456567A (en) * | 2019-08-06 | 2019-11-15 | 深圳市利航电子有限公司 | The golden finger break structure of backlight |
| CN110456567B (en) * | 2019-08-06 | 2020-05-08 | 深圳市利航电子有限公司 | Golden finger anti-breaking structure of backlight source |
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Application publication date: 20140402 |
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| WD01 | Invention patent application deemed withdrawn after publication |