CN101169547B - Flat display device and its backlight module group - Google Patents
Flat display device and its backlight module group Download PDFInfo
- Publication number
- CN101169547B CN101169547B CN2006101598408A CN200610159840A CN101169547B CN 101169547 B CN101169547 B CN 101169547B CN 2006101598408 A CN2006101598408 A CN 2006101598408A CN 200610159840 A CN200610159840 A CN 200610159840A CN 101169547 B CN101169547 B CN 101169547B
- Authority
- CN
- China
- Prior art keywords
- fluorescent tube
- circuit board
- electric capacity
- transverter
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a flat panel display device and a backlight module thereof. The backlight module comprises at least one first light tube, one second light tube, a circuit board, and a driving circuit board. The circuit board comprises a containing groove used for connecting the first light tube and the second light tube, and a capacitance used for stabilizing the voltage on two ends of the first light tube and the second light tube. The driving circuit board comprises a current changer which drives the first light tube and the second light tube via the circuit board. The invention has the advantages of saving the leads of light tubes, connecters and the board area of the circuit boards, preventing the high-voltage lines from falling down, and avoiding the damage of insulation. The invention can be used for driving U-shaped or C-type light tubes.
Description
Technical field
The invention relates to a kind of flat display apparatus and module backlight thereof, and particularly relevant for a kind of flat display apparatus and module backlight thereof that transverter (Inverter) and the electric capacity that couples fluorescent tube is placed various boards respectively.
Background technology
Please be simultaneously with reference to Fig. 1 and Fig. 2, Fig. 1 illustrates the vertical view into traditional backlight module.Fig. 2 illustrates the upward view into traditional backlight module.Traditional backlight module 10 comprises module casing 110, fluorescent tube 120, drive circuit board 150, backboard 160, lamp tube wire 170, hi-line 180 and connector 185.
Fluorescent tube 120, drive circuit board 150, backboard 160, lamp tube wire 170, hi-line 180 and connector 185 are disposed in the module casing 110.Connector 185 electrically connects via the lamp tube wire 170 of hi-line 180 with fluorescent tube 120.Fluorescent tube 120 is disposed on the backboard 160, and drive circuit board 150 is disposed at the below of backboard 160.
Furthermore, drive circuit board 150 comprises connector 154, electric capacity 134, printed circuit board (PCB) 156 and transverter 152.Connector 154, electric capacity 134 and the change of current 152 are disposed on the printed circuit board (PCB) 156, and connector 154 makes transverter 152 drive fluorescent tube 120 through electric capacity 134 and connector 154 in order to couple with connector 185.
Yet, owing to needing the fluorescent tube number of corresponding fluorescent tube 120, the number of connector 154, connector 185 and hi-line 180 disposes, and the price of connector 154, connector 185 and hi-line 180 is higher, therefore causes the production cost of module backlight effectively to reduce.
In addition, when manufacturer made printed circuit board (PCB) 156, the shape of sheet material mostly was rectangle.Printed circuit board (PCB) 156 still has part sheet material to be utilized, and causes the waste on the resource after connector 154, electric capacity 134 and transverter 152 configurations.
Summary of the invention
In view of this, purpose of the present invention is to provide a kind of flat display apparatus and module backlight thereof exactly.By transverter and the electric capacity that couples fluorescent tube are placed respectively on the various boards,, effectively reduce the manufacturing cost of display device to reduce the number of connector and hi-line in the module backlight.
According to first purpose of the present invention, a kind of module backlight is proposed.Module backlight comprises at least one first fluorescent tube and one second fluorescent tube, circuit board and drive circuit board.Circuit board comprises storage tank and electric capacity, and storage tank is in order to being connected with first fluorescent tube and second fluorescent tube, and electric capacity is in order to stablize the both end voltage of first fluorescent tube and second fluorescent tube.Drive circuit board comprises a transverter, transverter through circuit board to drive first fluorescent tube and second fluorescent tube.
According to second purpose of the present invention, a kind of flat display apparatus is proposed.Flat display apparatus comprises display panel and module backlight.Module backlight comprises at least one first fluorescent tube and one second fluorescent tube, circuit board and drive circuit board.Circuit board comprises storage tank and electric capacity, and storage tank is in order to being connected with first fluorescent tube and second fluorescent tube, and electric capacity is in order to stablize the both end voltage of first fluorescent tube and second fluorescent tube.Drive circuit board comprises a transverter, and transverter produces the required brightness of display panel through circuit board to drive first fluorescent tube and second fluorescent tube.
Above-mentioned module backlight and flat display apparatus can effectively reduce the usage quantity of fluorescent tube extension line, and then avoid that extension line is stressed to come off and the problem of insulation breakdown.In addition, when using at least one dual platen or at least two single sided boards, can drive U-shaped (U-Type) fluorescent tube or C type (C-Type) fluorescent tube in the both sides of dual platen or two single sided boards configuration high-voltage capacitance.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by a preferred embodiment, and cooperate appended graphicly, be described in detail below.Wherein:
Fig. 1 illustrates the vertical view into traditional backlight module.
Fig. 2 illustrates the upward view into traditional backlight module.
It is the stereographic map of a flat display apparatus that Fig. 3 illustrates.
Fig. 4 illustrates the module stereographic map a kind of backlight according to a preferred embodiment of the present invention.
Fig. 5 illustrates the module vertical view a kind of backlight according to a preferred embodiment of the present invention.
Fig. 6 illustrates the module upward view a kind of backlight according to a preferred embodiment of the present invention.
Fig. 7 illustrates the synoptic diagram of circuit board among Fig. 4 and Fig. 5.
Fig. 8 illustrates the another kind of synoptic diagram into circuit board.
Fig. 9, Figure 10, Figure 11, Figure 12 and Figure 13 illustrate the circuit diagram into module backlight.
The main element symbol description is as follows among the figure
10: traditional backlight module;
20: according to the module backlight of a preferred embodiment of the present invention;
30: display panel;
40: flat display apparatus;
110,210: module casing;
120,220: fluorescent tube;
134,234: electric capacity;
154,185,254,285: connector;
150,250: drive circuit board;
152,252: transverter;
156: printed circuit board (PCB);
160,260: backboard;
170,270: lamp tube wire;
180,280: hi-line;
230,330: circuit board;
232: concave structure;
236: power path;
332: circle type structure.
Embodiment
Please refer to Fig. 3, it illustrates is the stereographic map of a flat display apparatus.Flat display apparatus 40 comprises display panel 30 and module backlight 20.Module 20 backlight is in order to produce light L, makes display panel 30 display frame brightness according to this.
Please be simultaneously with reference to Fig. 4, Fig. 5 and Fig. 6.It is module stereographic map a kind of backlight according to a preferred embodiment of the present invention that Fig. 4 illustrates.It is module vertical view a kind of backlight according to a preferred embodiment of the present invention that Fig. 5 illustrates.It is module upward view a kind of backlight according to a preferred embodiment of the present invention that Fig. 6 illustrates.As shown in Figure 4, module 20 backlight comprises module casing 210, fluorescent tube 220 (is example with 6), two circuit boards 230, drive circuit board 250, backboard 260 and lamp tube wires 270.Fluorescent tube 220, circuit board 230, drive circuit board 250, backboard 260 and lamp tube wire 270 are arranged in the module casing 210.
In addition, as shown in Figure 6, drive circuit board 250 horizontal arrangement are in the below of backboard 260.And drive circuit board 250 comprises transverter 252 and connector 254.Transverter 252 is coupled to the connector 285 of circuit board 230 via connector 254, again via electric capacity 234 and lamp tube wire 270, to drive fluorescent tube 220.
As shown in Figure 5, the sheet material of above-mentioned circuit board 230 for example is printed circuit board (PCB), and two circuit boards 230 are disposed at the top of backboard 260 respectively, and respectively perpendicular to backboard 260.Circuit board 230 is respectively via lamp tube wire 270 and fluorescent tube 220 electric property couplings, fluorescent tube 220 for example be the cold cathode fluorescent lamp pipe (Cold Cathode Fluorescent Lamp, CCFL).Fluorescent tube 220 is disposed at the top of backboard 260, and respectively perpendicular to the surface of circuit board 230.
Please be simultaneously with reference to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, Fig. 7 illustrates the synoptic diagram of circuit board 230 among Fig. 4, Fig. 5 and Fig. 6.One side of circuit board 230 has storage tank, and storage tank is in order to be connected with fluorescent tube 220.The design example of storage tank is as being U-shaped structure 232.U-shaped structure 232 is welded in order to the end with lamp tube wire 270, when lamp tube wire 270 welds with U-shaped structure 232, except with the two electric connection, and can be by lamp tube wire 270 and 232 welding of U-shaped structure with the position of fixed lamp tube 220 in module casing 210.Circuit board 230 comprises electric capacity 234, power supply cabling (Trace) 236, hi-line 280 and connector 285.
In addition, electric capacity 234 in the circuit board 230 is in order to stablize the voltage at fluorescent tube 220 two ends, electric capacity 234 for example is surface adhering element (Surface Mount Device, SMD), pin plug-in components (Dual In-line Package, DIP) or multi-layer ceramic capacitance (Multi-layer Ceramic Chip Capacitor, MLCC).Electric capacity 234 is welded on the circuit board 230, electric capacity 234 visual demands and be welded in the upper surface of circuit board 230 or be welded in the upper and lower surface of circuit board 230 simultaneously.And circuit board 230 via circuit layout (Layout) after, etch power supply cabling 236.Make an end of electric capacity 234 be coupled to U-shaped structure 232 respectively, and the other end is coupled to an end of hi-line 280 respectively via power supply cabling 236 via power supply cabling 236.The other end of hi-line 280 is coupled to connector 285.The connector 285 of circuit board 230 couples with the connector 254 of drive circuit board 250, after making high voltage that transverter 252 provides via the electric capacity 234 on hi-line 280 and the circuit board 230, export fluorescent tube 270 to and light fluorescent tube 270, to produce the required light L of display panel 30.
Therefore, module 20 backlight of the present invention only need use connector 285 and 254 and hi-lines 280, can couple transverter 252 and many tubes 220, reaches the purpose that drives fluorescent tube 220, effectively reduces the manufacturing cost of flat display apparatus 40.
Please refer to Fig. 8, it illustrates the another kind of synoptic diagram into circuit board.Storage tank is designed to it also can illustrate as Fig. 8 U type structure except that illustrating as Fig. 7, and storage tank is designed to enclose capable structure 332 to couple lamp tube wire 270.
Have multiple circuit connecting mode between fluorescent tube 220 and the electric capacity 234 in the above-mentioned module backlight 20, enumerate Fig. 9, Figure 10, Figure 11, Figure 12 and Figure 13 after now and illustrate and be the example explanation.
Please refer to Fig. 9, it illustrates is the circuit diagram of first kind of module backlight.Fluorescent tube 220 among Fig. 9 is the line style fluorescent tube, second end of electric capacity 234 is respectively coupled to the two ends of line style fluorescent tube, and first end of electric capacity 234 is coupled to transverter 252, makes supply voltage Vac that single transverter 252 produced through the many tubes 220 of electric capacity 234 rear drives.
Please refer to Figure 10, it illustrates is the circuit diagram of second kind of module backlight.Fluorescent tube 220 among Figure 10 is the line style fluorescent tube, an end of adjacent two line style fluorescent tubes is coupled mutually, to form analog-U shaped pattern (Quasi-U).The other end of fluorescent tube 220 and second end of electric capacity 234 are coupled, and first end of electric capacity 234 is coupled to transverter 252, makes supply voltage Vac that single transverter 252 produced through the many tubes 220 of electric capacity 234 rear drives.
Please refer to Figure 11, it illustrates the circuit diagram into the third module backlight.Fluorescent tube 220 is the line style fluorescent tube among the figure, one end of adjacent two tubes 220 is coupled with first end and second end of electric capacity 234 respectively, and the other end of fluorescent tube 220 is coupled to transverter 252, make supply voltage Vac that single transverter 252 produced through the many tubes 220 of electric capacity 234 rear drives.
Please refer to Figure 12, it illustrates is the circuit diagram of the 4th kind of module backlight.Fluorescent tube 220 among Figure 12 is a C type fluorescent tube, the two ends of C type fluorescent tube couple with second end of electric capacity 234 respectively, and first end of electric capacity 234 is coupled to transverter 252, makes supply voltage Vac that single transverter 252 produced through the many tubes 220 of electric capacity 234 rear drives.
Please refer to Figure 13, it illustrates is the circuit diagram of the 5th kind of module backlight.Fluorescent tube 220 among Figure 13 is a U type fluorescent tube, the two ends of U type fluorescent tube couple with second end of electric capacity 234 respectively, and first end of electric capacity 234 is coupled to transverter 252, makes supply voltage Vac that single transverter 252 produced through the many tubes 220 of electric capacity 234 rear drives.
As mentioned above; though the present invention is that example explains with two circuit board and 6 tubes with electric capacity; so do not limit to the scope of the present invention, the present invention also can be applicable in the module backlight of the circuit board of different sheet numbers and different fluorescent tube numbers, to drive many tubes by single transverter.
In addition, fluorescent tube also is not limited to the line style fluorescent tube, also can be applicable to the fluorescent tube of U type fluorescent tube, L type fluorescent tube, W type fluorescent tube, round lamp tube or other shapes.
Disclosed flat display apparatus of the above embodiment of the present invention and module backlight thereof by the storage tank that fluorescent tube is coupled to circuit board, make the present invention will have following advantage:
First advantage of the present invention is to save the hi-line (or being called the fluorescent tube extension line) that needs use.The foregoing description is by etching the power supply cabling in circuit board, and the power supply cabling is coupled to a hi-line, makes that transverter only needs be electrically coupled to a plurality of electric capacity via a hi-line, can drive many tubes.
Second advantage of the present invention is to save the connector that needs use.Because the foregoing description only needs a hi-line can drive many tubes, therefore only need use a connector, gets final product coupling capacitance and transverter, will reduce the use number of connector in the module backlight, effectively reduces the manufacturing cost of display device.
The 3rd advantage of the present invention is to save the sheet material area of the circuit board that needs use.Because condenser welding is connected on the circuit board of vertical back-panel, so drive circuit board can reduce the board area of required use only in order to the configuration converter circuit, avoid the waste of circuit board plate material simultaneously.
The 4th advantage of the present invention is to reduce that hi-line is stressed to come off and the problem of insulation breakdown.Because the usage quantity of hi-line reduces, and then avoid that hi-line is stressed to come off and the problem of insulation breakdown.
The 5th advantage of the present invention is to can be used for driving U-shaped fluorescent tube or C type fluorescent tube, when using at least one dual platen or at least two single sided boards, can drive U-shaped fluorescent tube or C type fluorescent tube in the both sides of dual platen or two single sided boards configuration high-voltage capacitance.
In sum; though the present invention discloses as above with a preferred embodiment; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is with being as the criterion that claims were defined.
Claims (10)
1. module backlight comprises:
At least one first fluorescent tube, one second fluorescent tube and lamp tube wire;
One circuit board comprises:
The storage tank of a most U-shaped structure in order to be connected with this first fluorescent tube and this second fluorescent tube, welds with fixing described first fluorescent tube and the position of second fluorescent tube in module casing by the U-shaped structure of described lamp tube wire and described storage tank; And
A most electric capacity, described electric capacity is in order to stablize the both end voltage of this first fluorescent tube and this second fluorescent tube; And
The one drive circuit plate comprises a transverter, this transverter through this circuit board to drive this first fluorescent tube and this second fluorescent tube.
2. module backlight as claimed in claim 1 is characterized in that, described module backlight also comprises a module casing, this module casing has a backboard, in order to this first fluorescent tube and this second fluorescent tube to be set, and this circuit board is placed in this module casing, and vertically this backboard configuration.
3. module backlight as claimed in claim 1 is characterized in that, described circuit board and described fluorescent tube arranged perpendicular.
4. module backlight as claimed in claim 1 is characterized in that, first end of described electric capacity is coupled to this transverter, and second end of each electric capacity is coupled to an end of this first fluorescent tube and this second fluorescent tube.
5. module backlight as claimed in claim 1 is characterized in that, one of them is coupled to an end of this second fluorescent tube to an end of described first fluorescent tube through described electric capacity, and the other end of this first fluorescent tube and this second fluorescent tube is coupled to this transverter.
6. flat display apparatus comprises:
One display panel; And
One module backlight comprises:
At least one first fluorescent tube and one second fluorescent tube;
One circuit board comprises:
The storage tank of a most U-shaped structure in order to be connected with this first fluorescent tube and this second fluorescent tube, welds with fixing described first fluorescent tube and the position of second fluorescent tube in module casing by the U-shaped structure of described lamp tube wire and described storage tank; And
A most electric capacity, described electric capacity is in order to stablize the both end voltage of this first fluorescent tube and this second fluorescent tube; And
The one drive circuit plate comprises a transverter, this transverter through this circuit board to drive this first fluorescent tube and this second fluorescent tube produces the required brightness of this display panel.
7. flat display apparatus as claimed in claim 6 is characterized in that, described module backlight also comprises a module casing, this module casing has a backboard, in order to this first fluorescent tube and this second fluorescent tube to be set, and this circuit board is placed in this module casing, and vertically this backboard configuration.
8. flat display apparatus as claimed in claim 6 is characterized in that, described circuit board and described fluorescent tube arranged perpendicular.
9. flat display apparatus as claimed in claim 6 is characterized in that, first end of described electric capacity is coupled to this transverter, and second end of each electric capacity is coupled to an end of this first fluorescent tube and this second fluorescent tube.
10. flat display apparatus as claimed in claim 6 is characterized in that, one of them is coupled to an end of this second fluorescent tube to an end of described first fluorescent tube through described electric capacity, and the other end of this first fluorescent tube and this second fluorescent tube is coupled to this transverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101598408A CN101169547B (en) | 2006-10-26 | 2006-10-26 | Flat display device and its backlight module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101598408A CN101169547B (en) | 2006-10-26 | 2006-10-26 | Flat display device and its backlight module group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101169547A CN101169547A (en) | 2008-04-30 |
| CN101169547B true CN101169547B (en) | 2011-06-08 |
Family
ID=39390222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101598408A Active CN101169547B (en) | 2006-10-26 | 2006-10-26 | Flat display device and its backlight module group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101169547B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441286A (en) * | 2002-02-26 | 2003-09-10 | 奇美电子股份有限公司 | Back lighting module and LCD |
| WO2005109966A1 (en) * | 2004-05-07 | 2005-11-17 | Matsushita Electric Industrial Co., Ltd. | Cold-cathode tube lighting device |
| CN1716038A (en) * | 2004-06-30 | 2006-01-04 | Lg.菲利浦Lcd株式会社 | Backlight unit for liquid crystal display device |
| CN2784968Y (en) * | 2005-04-03 | 2006-05-31 | 群康科技(深圳)有限公司 | Back light module |
-
2006
- 2006-10-26 CN CN2006101598408A patent/CN101169547B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441286A (en) * | 2002-02-26 | 2003-09-10 | 奇美电子股份有限公司 | Back lighting module and LCD |
| WO2005109966A1 (en) * | 2004-05-07 | 2005-11-17 | Matsushita Electric Industrial Co., Ltd. | Cold-cathode tube lighting device |
| CN1716038A (en) * | 2004-06-30 | 2006-01-04 | Lg.菲利浦Lcd株式会社 | Backlight unit for liquid crystal display device |
| CN2784968Y (en) * | 2005-04-03 | 2006-05-31 | 群康科技(深圳)有限公司 | Back light module |
Non-Patent Citations (1)
| Title |
|---|
| CN 1716038 A,全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101169547A (en) | 2008-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101365906B (en) | Illuminating apparatus for display device, display device, and television receiver | |
| JP4789908B2 (en) | Backlight unit for liquid crystal display device and liquid crystal display module | |
| KR101295074B1 (en) | Backlight unit and liquid crystal display having the same | |
| CN1477921A (en) | Apparatus for fixed thread reel to printed circuit board using in transformer | |
| CN101169547B (en) | Flat display device and its backlight module group | |
| TW594223B (en) | Backlight module and liquid crystal display device | |
| US8154505B2 (en) | Backlight module having a chambered circuit board | |
| CN100561313C (en) | Module backlight and lamp tube securing holder thereof | |
| CN210641131U (en) | FPC flexible line way board, display module assembly and electron device | |
| CN102661581A (en) | Connecting wire structures of direct-down-type lamp bars and connecting method thereof | |
| CN208721240U (en) | Electronic scale backlight module and electronic scale | |
| CN206975361U (en) | Direct-type backlight lamp bar module | |
| US20060120103A1 (en) | Liquid-crystal display apparatus and backlight module thereof | |
| CN219976248U (en) | LED lamp panel structure | |
| CN200975621Y (en) | Backlight module and multi-strip-lamp driver circuit thereof | |
| CN114464097B (en) | Display structure, manufacturing method of display structure and display | |
| CN221008053U (en) | Backlight substrate, backlight device and display device | |
| CN201601895U (en) | Expanded PCB | |
| KR100703185B1 (en) | Back-light unit of lcd having a base board for power supply | |
| CN219496853U (en) | Lamp panel of LED lamp strip and electronic equipment | |
| CN201104276Y (en) | Side light type backlight module | |
| CN202958076U (en) | Board-level interconnection structure and electrical equipment | |
| CN201547696U (en) | Connector | |
| KR100911054B1 (en) | Back light module apparatus and assembly method thereof | |
| CN101266037B (en) | Fluorescent lamp set, backlight module group and display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |