CN101266037B - Fluorescent lamp set, backlight module group and display apparatus - Google Patents
Fluorescent lamp set, backlight module group and display apparatus Download PDFInfo
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- CN101266037B CN101266037B CN200810094051XA CN200810094051A CN101266037B CN 101266037 B CN101266037 B CN 101266037B CN 200810094051X A CN200810094051X A CN 200810094051XA CN 200810094051 A CN200810094051 A CN 200810094051A CN 101266037 B CN101266037 B CN 101266037B
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- pcb board
- copper foil
- sided pcb
- fluorescent tube
- fluorescent lamp
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Abstract
The invention relates to a display device, and discloses a fluorescent lamp set, a backlight module and a display device. The fluorescent lamp set comprises a PCB board and a fluorescent tube, the PCB board is a double face PCB board, the two faces of the double-face PCB board are provided with copper foil, the first face of copper foil on the double face PCB board is connected with a driving power, one end of the fluorescent tube is connected with the second face of copper foil on the double-face PCB board, the projection of the first face of copper foil on the second face of the double-face PCB board have area superposition with the second face of copper foil on the double-face PCB board. The technical proposal provided by the inventive embodiment reduces the risk of capacitance failure, thereby ensuring the regular service of the fluorescent tube.
Description
Technical field
The present invention relates to display device, particularly relate to a kind of fluorescent lamp group, module backlight and display unit.
Background technology
Along with the exploitation of LCDs and Related product, the use of LCDs more and more widely.At present, the light source that these products adopted is most to be that fluorescent lamp group, particularly cold-cathode fluorescence lamp group have obtained using widely.
In general, go up the usual pcb board that uses a single face of assembling fluorescent lamp group at printed circuit board (PCB) (PCB:Printed Circuit Board), the traditional capacitance of required use in the circuit under the capacitive balance pattern is welded on the pcb board, one end of traditional capacitance is connected with fluorescent tube, the other end of electric capacity is electrically connected with driving power, and the while fluorescent tube also needs to be welded on to be made it on the pcb board to be electrically connected with an end of traditional capacitance.
But, because the limitation of traditional capacitance, traditional capacitance in the foregoing circuit is to adopt the mode of welding to be connected on the pcb board, in the process of welding, cause condenser failure easily, influence the normal use of fluorescent tube, simultaneously, along with the slimming day by day of display, traditional capacitance has strengthened the usable floor area of pcb board, and the mode of welding makes that the installation effectiveness of traditional capacitance is low.
Summary of the invention
The embodiment of the invention provides a kind of fluorescent lamp group, module backlight and display unit, and the technical scheme of using the embodiment of the invention to provide is omitted traditional capacitance, reduces traditional electric capacity welding sequence, reduces cost.
The embodiment of the invention provides a kind of fluorescent lamp group, comprises pcb board and fluorescent tube;
Described pcb board is two-sided pcb board, and there is Copper Foil on the two sides of described two-sided pcb board, and the Copper Foil that described two-sided pcb board is first is connected with driving power;
One end of described fluorescent tube is connected with second Copper Foil of described two-sided pcb board, and described first Copper Foil has area to overlap in the projection of second of described two-sided pcb board with the Copper Foil of second of described two-sided pcb board.
Preferably, the ratio of the thickness value of the area numerical value of described area intersection and described two-sided pcb board substrate is between 200-400.
Preferably, an end of described fluorescent tube is connected with the Copper Foil of second of described two-sided pcb board by the mode of welding.
Preferably, an end of described fluorescent tube is connected by the Copper Foil of connector with second of described two-sided pcb board.
Wherein, described connector is welded on described second Copper Foil, and an end of described fluorescent tube is stuck on the clamp of described connector.
Preferably, described second Copper Foil is connected with an end of described fluorescent tube by the mode of wedging, have groove on the described two-sided pcb board, described fluorescent tube has external electrode with the end that the Copper Foil of second of described two-sided pcb board is connected, described external electrode and described groove wedging, second Copper Foil on second of described two-sided pcb board is furnished with the contact chip that can electrically contact with external electrode, the external electrode insulation of an end of described first Copper Foil and fluorescent tube.
Preferably, the mode of described wedging is, described two-sided pcb board plane and described fluorescent tube are perpendicular, and the external electrode of described fluorescent tube one end inserts the groove of two-sided pcb board.
Preferably, the mode of described wedging is, described two-sided pcb board plane and described fluorescent tube are in same plane, and the external electrode of described fluorescent tube inserts the groove of two-sided pcb board.
Preferably, described first Copper Foil and described second Copper Foil symmetry.
Preferably, the quantity of described first Copper Foil is identical with the quantity of described fluorescent tube.
Wherein, the quantity of described first Copper Foil is during at least two, and described at least two first Copper Foil is connected with described driving power by a thin Copper Foil.
The embodiment of the invention also provides a kind of module backlight, it is characterized in that, comprise that the embodiment of the invention provides the fluorescent lamp group, the metal base plate of two-sided pcb board in the fixing described fluorescent lamp group.
Preferably, when the Copper Foil on the described two-sided pcb board had projection on described metal base plate, the position of the corresponding described projection of described metal base plate had window.
The embodiment of the invention also provides a kind of display unit, comprises the module above-mentioned backlight that the embodiment of the invention provides.
From the above, the embodiment of the invention directly is arranged on Copper Foil two-sided pcb board two sides to replace the traditional capacitance of welding, omit traditional capacitance, saved the usable floor area of pcb board, comply with the slimming trend of module backlight, simultaneously, use the electric capacity of the Copper Foil formation on two-sided pcb board two sides can reduce the operation of welding traditional capacitance, avoided causing the risk of condenser failure, thereby reduced cost because of welding; Further, can use connector or wedging mode to connect fluorescent tube and pcb board, do not need fluorescent tube is welded on the pcb board, when being installed, fluorescent tube do not need welding, reduced the risk that lost efficacy, can realize simultaneously the continuous productive process that fluorescent tube connects, and fluorescent tube is connected with pcb board by connector, when keeping in repair, can dismantles and install fluorescent tube easily.
Description of drawings
Fig. 1 is the vertical view of first of two-sided pcb board;
Fig. 2 is the perspective view of two-sided pcb board;
Fig. 3 is a two-sided pcb board two sides Copper Foil perspective view;
Fig. 4 is the schematic diagram that cathode fluorescent tube one end is connected with two-sided pcb board;
Fig. 5 is the front view that has first of the two-sided pcb board of groove;
Fig. 6 is the front view that has second of the two-sided pcb board of groove;
Fig. 7 has the two-sided pcb board plane of groove and the schematic diagram of the vertical wedging of cathode fluorescent tube external electrode;
Fig. 8 is the schematic diagram that has the two-sided pcb board of groove and cathode fluorescent tube external electrode wedging when existing together a plane;
Fig. 9 is the schematic diagram that many cathode fluorescent tube two ends all connect two-sided pcb board;
Figure 10 is that two-sided pcb board Copper Foil simultaneously is with a thin Copper Foil connection diagram;
Figure 11 is a module schematic diagram backlight;
Figure 12 is the metal base plate schematic diagram of module backlight.
The specific embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
As shown in Figure 1, first 1 of two-sided pcb board has Copper Foil, and Copper Foil can adopt surface mounting technology (SMT:Surface mount technology) to be encapsulated on the pcb board, also can directly overlay on the pcb board, can also be embedded on the pcb board; The embodiment of the invention does not limit Copper Foil attached to the concrete mode on the pcb board.
As shown in Figure 2, second 2 of two-sided pcb board is the same with first 1, and the Copper Foil that adheres to is in the above described manner also arranged, and described first 1 Copper Foil and second 's 2 Copper Foil shape and area size can be the same or different;
As shown in Figure 3, described first 1 Copper Foil has the part area to overlap at the Copper Foil of second 2 of the projection of second 2 of described two-sided pcb board and described two-sided pcb board; But preferred first 1 Copper Foil of the embodiment of the invention can all overlap Copper Foil that promptly two-sided pcb board is first 1 and second 2 Copper Foil symmetry second 2 projection with second 2 Copper Foil.The Copper Foil of intersection is formed electric capacity Copper Foil group 5.
When the two-sided Copper Foil of two-sided pcb board was asymmetric, if all there are at least two blocks of Copper Foils on the two sides of two-sided pcb board, more excellent mode was that the projection of Copper Foil on second of first of described two-sided pcb board only has area to overlap with a Copper Foil of second.
Because the pcb board substrate is an insulator, according to the principle of plate condenser structure, this has just formed plate condenser: two parallel plate electrodes close to each other are arranged, and the area of two-plate equates, is dielectric between the two-plate.One end 9 of described fluorescent tube 7 directly is connected with the Copper Foil of second 2 of pcb board, and first 1 Copper Foil of described two-sided pcb board is connected with driving power.Wherein, the described fluorescent tube of the embodiment of the invention can be cathode fluorescent tube, but need to prove that the embodiment of the invention does not limit and can only adopt cathode fluorescent tube.
According to capacity plate antenna formula (C=ε S/4 π kd, ε wherein, π, k is a fixed value in an electric capacity) as can be known, the capacitor C of plate condenser is directly proportional with the area S of pole plate, and being inversely proportional between pole plate apart from d, size according to the usually used electric capacity of cathode fluorescent tube circuit in the reality, can calculate the numerical value ratio of more excellent S and d, be the Copper Foil of first 1 of the Copper Foil of second 2 of described two-sided pcb board and described two-sided pcb board at the ratio of the thickness value of the area numerical value of second 2 projection institute intersection of the described two-sided PCB utmost point and described two-sided pcb board substrate between 200-400, can adjust this numerical value according to actual needs certainly.
From the above, present embodiment directly is arranged on Copper Foil two-sided pcb board two sides to replace the traditional capacitance of welding, omit traditional capacitance, saved the usable floor area of pcb board, comply with the slimming trend of module backlight, simultaneously, use the electric capacity of the Copper Foil formation on two-sided pcb board two sides can reduce the operation of welding traditional capacitance, both reduced cost, also avoided causing the risk of condenser failure because of welding.
As shown in Figure 4, the junction 8 of the Copper Foil of second 2 of an end 9 of cathode fluorescent tube 7 and two-sided pcb board is connected; Specifically can adopt the mode of welding to connect, use welding material that the one or both ends of cathode fluorescent tube 7 can be reached the effect that is electrically connected with the Copper Foil welding;
Also can use connector that the Copper Foil of second 2 of one end 9 of cathode fluorescent tube 7 and two-sided pcb board is electrically connected, more excellent mode is that described connector is fixed on described second 2 Copper Foil by modes such as welding, one end 9 of described fluorescent tube 7 is fixed on the connector by the fixture on the described connector, and wherein fixture can be a clamp etc.
When one end of cathode fluorescent tube is connected with pcb board by connector, when maintenance, can dismantles and install cathode fluorescent tube easily.
Further, the Copper Foil of second 2 of pcb board can also adopt the wedging mode to be connected with an end of cathode fluorescent tube.When adopting the wedging mode, the end that fluorescent tube is connected with pcb board has external electrode.As shown in Figure 5, on two-sided pcb board, have groove 14, have the breach of avoiding groove 14 on first 1 described Copper Foil of two-sided pcb board.
As shown in Figure 6, the Copper Foil on second 2 of two-sided pcb board is furnished with contact chip 13, and the Copper Foil 4 that contact chip 13 and two-sided pcb board are second 2 is connected, and the edge of the groove 14 on the two-sided pcb board overlaps with the edge of contact chip 13.The embodiment of the invention does not limit the connected mode of contact chip 13 and Copper Foil 4, a kind of more excellent mode that the embodiment of the invention provides be contact chip 13 with second 2 of described two-sided pcb board on Copper Foil be the integral production moulding, promptly contact chip 13 also is the part of the Copper Foil on second 2.
As shown in Figure 7, on the end 9 that the Copper Foil 4 of second 2 of cathode fluorescent tube 7 and two-sided pcb board is connected external electrode is arranged; External electrode and groove 14 wedgings, when wedging, Copper Foil that two-sided pcb board is first 1 and the insulation of the external electrode of cathode fluorescent tube.When external electrode and groove 14 wedgings, because the edge of groove 14 overlaps with the edge of contact chip, therefore can keep external electrode to stablize and contact, and keep Copper Foil and external electrode, the contact chip 13 of second 1 of described pcb board to insulate with contact chip 13.
Integrated mode is beneficial to batch process, and convenient the installation, makes cathode fluorescent tube and Copper Foil electrically contact stability and improves.
The embodiment of the invention provides wedging mode as shown in Figure 7 and Figure 8:
As shown in Figure 7, described two-sided pcb board plane and cathode fluorescent tube 7 are perpendicular, the external electrode of described cathode fluorescent tube 7 inserts the groove 14 of two-sided pcb board, because the edge of contact chip and the coincident of groove 14, therefore just fluorescent tube 7 can be connected with contact chip by external electrode, be about to fluorescent tube and be connected with Copper Foil;
As shown in Figure 8, described two-sided pcb board plane and described cathode fluorescent tube 7 are in same plane, and the external electrode of described cathode fluorescent tube 7 inserts the groove 14 of two-sided pcb board.
Adopt above wedging mode, do not need to adopt the mode of welding that fluorescent tube is connected on the pcb board, help the installation and removal of fluorescent tube.
Wherein, groove 14 can with pcb board on to have a sideline of this groove vertical, but the embodiment of the invention preferably adopts the sideline out of plumb that has this groove on as shown in Figure 5 and Figure 6 groove 14 and the pcb board, and this moment is when the plane of pcb board and cathode fluorescent tube 7 perpendicular placements.Help fixedly cathode fluorescent tube on pcb board.
As shown in Figure 9, the cold-cathode fluorescence lamp group can reach the capacitive balance pattern by the mode that cathode fluorescent tube two ends 9 and 10 are connected with same capacitance, therefore, at an end 9 of cathode fluorescent tube when Copper Foil on the above-mentioned two-sided pcb board is connected, the other end 10 of cathode fluorescent tube 7 can be connected with the Copper Foil that another piece has the two-sided pcb board of same structure, thereby reach the capacitive balance pattern.
When many cathode fluorescent tubes are arranged, can be connected the Copper Foil of second 2 of two-sided pcb board at the two ends 9 of every cathode fluorescent tube 7 with 10, one group of electric capacity Copper Foil group 5 on the only corresponding described two-sided pcb board of each end of cathode fluorescent tube; Because normally parallel placement between the cathode fluorescent tube, preferred mode is to place a two-sided pcb board that many group electric capacity Copper Foil groups 5 are arranged in substrate arranged at an end 9 of the cathode fluorescent tube of all placements parallel to each other, Copper Foil on second 2 of one end 9 of every cathode fluorescent tube and the two-sided pcb board is electrically connected, place the same described two-sided pcb boards that many group electric capacity Copper Foil groups 5 are arranged in substrate arranged at the other end 10 of all cathode fluorescent tubes, the Copper Foil of correspondence position is electrically connected on second 2 of the other end 10 of every cathode fluorescent tube and the two-sided pcb board of another piece, thereby by realizing that the capacitive balance pattern constitutes the cold-cathode fluorescence lamp group.
Above-mentioned electrical connection can be adopted modes such as foregoing welding, connector, wedging, and the Copper Foil that above two-sided pcb board is first connects driving power 6.
As shown in figure 10, first 1 Copper Foil can be connected on the driving power 6 with the Copper Foil that plays the lead effect on multiple conducting wires or the many pcb boards on the described two-sided pcb board, more excellent mode is as shown in figure 10, to use thin Copper Foil 11 to connect between each Copper Foil of first 1 on the described two-sided pcb board, thereby first 1 Copper Foil can be connected on the driving power 6 by a thin Copper Foil.
In like manner, if using under the situation of second and even more described two-sided pcb board, first 1 Copper Foil can be connected on the driving power with the Copper Foil that plays the lead effect on multiple conducting wires or the many pcb boards on the described two-sided pcb board, also first 1 Copper Foil on the described two-sided pcb board all can be connected on the driving power with a thin Copper Foil 11.Succinct on the pcb board circuit is made, convenient like this.
As shown in figure 11, in the backlight liquid crystal display module or in the application in relevant demonstration field, module backlight can comprise many cathode fluorescent tubes and electric capacity etc. and fix the metal base plate of these electronic building bricks.After the traditional capacitance of in having used described two-sided pcb board electric capacity Copper Foil group 5 replacement prior aries, having used, can save the usable floor area of two-sided pcb board, realize the slimming of module backlight.Wherein, can allow first 1 of two-sided pcb board to face metal base plate 12, also can allow second 2 of pcb board face metal base plate 12, can adopt modes such as the nut screw connects, bonding, welding, grafting that described pcb board and metal base plate 12 are fixed.
More excellent backlight liquid crystal display module can adopt all cathode fluorescent tubes neat equidistant placement parallel to each other, use two identical described two-sided pcb boards, be furnished with the electric capacity Copper Foil group 5 the same on the every pcb board with cathode fluorescent tube quantity, the spacing of every group of electric capacity Copper Foil group 5 on every pcb board is identical, and the Copper Foil area of described electric capacity Copper Foil group 5 is also identical.
Copper Foil on second of cathode fluorescent tube one end 9 and the two-sided pcb board wherein is electrically connected, second Copper Foil of going up correspondence position of the cathode fluorescent tube other end 10 and the two-sided pcb board of another piece is electrically connected, above-mentioned electrical connection can be adopted modes such as above-mentioned welding, connector connection, wedging, and the Copper Foil that above-described two-sided pcb board is first connects driving power 6.
Two-sided pcb board and metal base plate 12 secured in parallel, distance between pcb board and metal base plate 12 is less, and when the Copper Foil on the two-sided pcb board has projection on metal base plate 12, in order to reach more excellent capacitive property, as shown in figure 12, position corresponding with the Copper Foil of first 1 of described pcb board on described metal base plate 12 has window 16, thereby avoids metal base plate that the electric capacity between the Copper Foil on the two-sided pcb board is impacted.
Further, if two-sided pcb board is direct and metal base plate is fitted, the electric capacity that Copper Foil constitutes on the two-sided pcb board is subjected to the interference of metal base plate easily, therefore after using the electric capacity that Copper Foil constitutes on the two-sided pcb board, can between two-sided pcb board and metal base plate, be provided with and have the plastic plate of window, thus avoid two-sided pcb board directly with the metal base plate applying.
Wherein, be understandable that the accompanying drawing of the above embodiment of the present invention only is for the foregoing description being described wherein Copper Foil shape and size, groove size, shape and opening direction, the shape of contact chip, size and direction etc. can change in the description of accompanying drawing.
The embodiment of the invention also provides display unit, and this display unit comprises module backlight provided by the invention.Display unit provided by the invention can be television set, display etc.
More than a kind of fluorescent lamp group that the embodiment of the invention provided, module backlight and display unit are described in detail, the explanation of above embodiment just is used for help understanding method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. a fluorescent lamp group is characterized in that, comprises pcb board and fluorescent tube;
Described pcb board is two-sided pcb board, and there is Copper Foil on the two sides of described two-sided pcb board, and the Copper Foil that described two-sided pcb board is first is connected with driving power;
One end of described fluorescent tube is connected with second Copper Foil of described two-sided pcb board, described first Copper Foil has area to overlap in the projection of second of described two-sided pcb board with the Copper Foil of second of described two-sided pcb board, and first Copper Foil of described two-sided pcb board and second Copper Foil constitute electric capacity.
2. fluorescent lamp group according to claim 1 is characterized in that, the ratio of the area numerical value of described area intersection and the thickness value of described two-sided pcb board substrate is between 200-400.
3. fluorescent lamp group according to claim 1 and 2 is characterized in that, an end of described fluorescent tube is connected with the Copper Foil of second of described two-sided pcb board by the mode of welding.
4. fluorescent lamp group according to claim 1 and 2 is characterized in that, an end of described fluorescent tube is connected by the Copper Foil of connector with second of described two-sided pcb board.
5. fluorescent lamp group according to claim 4 is characterized in that, described connector is welded on described second Copper Foil, and an end of described fluorescent tube is stuck on the clamp of described connector.
6. fluorescent lamp group according to claim 1 and 2, it is characterized in that, described second Copper Foil is connected with an end of described fluorescent tube by the mode of wedging, have groove on the described two-sided pcb board, described fluorescent tube has external electrode with the end that the Copper Foil of second of described two-sided pcb board is connected, described external electrode and described groove wedging, second Copper Foil on second of described two-sided pcb board is furnished with the contact chip that can electrically contact with external electrode, the external electrode insulation of an end of described first Copper Foil and fluorescent tube.
7. fluorescent lamp group according to claim 6 is characterized in that, the mode of described wedging is, described two-sided pcb board plane and described fluorescent tube are perpendicular, and the external electrode of described fluorescent tube one end inserts the groove of two-sided pcb board.
8. fluorescent lamp group according to claim 6 is characterized in that, the mode of described wedging is, described two-sided pcb board plane and described fluorescent tube are in same plane, and the external electrode of described fluorescent tube inserts the groove of two-sided pcb board.
9. fluorescent lamp group according to claim 1 and 2 is characterized in that, described first Copper Foil and described second Copper Foil symmetry.
10. fluorescent lamp group according to claim 9 is characterized in that, the quantity of described first Copper Foil is identical with the quantity of described fluorescent tube.
11. fluorescent lamp group according to claim 10 is characterized in that, the quantity of described first Copper Foil is during at least two, and described at least two first Copper Foil is connected with described driving power by a thin Copper Foil.
12. a module backlight that comprises claim 1 or 2 described fluorescent lamp groups is characterized in that, also comprises the metal base plate of two-sided pcb board in the fixing described fluorescent lamp group.
13. module backlight according to claim 12 is characterized in that, when the Copper Foil on the described two-sided pcb board had projection on described metal base plate, the position of the corresponding described projection of described metal base plate had window.
14. a display unit is characterized in that, comprises as claim 12 or 13 described modules backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810094051XA CN101266037B (en) | 2008-04-28 | 2008-04-28 | Fluorescent lamp set, backlight module group and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810094051XA CN101266037B (en) | 2008-04-28 | 2008-04-28 | Fluorescent lamp set, backlight module group and display apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101266037A CN101266037A (en) | 2008-09-17 |
| CN101266037B true CN101266037B (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810094051XA Expired - Fee Related CN101266037B (en) | 2008-04-28 | 2008-04-28 | Fluorescent lamp set, backlight module group and display apparatus |
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| CN (1) | CN101266037B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119752B (en) * | 2018-08-13 | 2022-03-04 | 瑞声科技(新加坡)有限公司 | Antenna system and mobile terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5910755A (en) * | 1993-03-19 | 1999-06-08 | Fujitsu Limited | Laminate circuit board with selectable connections between wiring layers |
| CN200997602Y (en) * | 2006-09-28 | 2007-12-26 | 华为技术有限公司 | Coupler and double-side PCB |
-
2008
- 2008-04-28 CN CN200810094051XA patent/CN101266037B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5910755A (en) * | 1993-03-19 | 1999-06-08 | Fujitsu Limited | Laminate circuit board with selectable connections between wiring layers |
| CN200997602Y (en) * | 2006-09-28 | 2007-12-26 | 华为技术有限公司 | Coupler and double-side PCB |
Non-Patent Citations (1)
| Title |
|---|
| JP 2004-6134 A,全文. |
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| CN101266037A (en) | 2008-09-17 |
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