CN201278297Y - Backlight lamp transformer for liquid crystal display screen - Google Patents
Backlight lamp transformer for liquid crystal display screen Download PDFInfo
- Publication number
- CN201278297Y CN201278297Y CNU2008203021866U CN200820302186U CN201278297Y CN 201278297 Y CN201278297 Y CN 201278297Y CN U2008203021866 U CNU2008203021866 U CN U2008203021866U CN 200820302186 U CN200820302186 U CN 200820302186U CN 201278297 Y CN201278297 Y CN 201278297Y
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- CN
- China
- Prior art keywords
- coil
- transformer
- backlight lamp
- utility
- coupling coil
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a transformer, in particular to a transformer coupling coil. Aiming at the defects of complex winding technology of coils, poor consistency of wound coils and high rejection rate, the utility model discloses an unnecessarily-wound transformer coil. For solving the technical problems, the utility model adopts the technical scheme that a liquid crystal display screen backlight transformer comprises a magnetic core and a coupling coil; and the coupling coil is sleeved on the magnetic core and is formed by conductive materials attached to an insulating matrix. The utility model has the advantages of simple fabrication technology, accurate number of turns and shape of fabricated coils, good repeatability, and high product qualified rate, and is especially suitable for making coils with a small number of turns and small wire diameters.
Description
Technical field
The utility model relates to transformer, particularly transformer coupled coil.
Background technology
The main application of transformer is conversion alternating voltage, electric current and impedance.Transformer generally is made of magnetic core and coupling coil, and transformer coupled coil generally has two or more windings, and the winding that wherein connects power supply is primary coil, and remaining winding is secondary coil.When being connected with alternating current in the elementary coil, just produce alternating flux in the magnetic core, make and induce voltage (or electric current) in the secondary coil.
In the prior art, the coil of transformer generally adopts the wire rod coiling, and the coil consistency of making like this is poor, the percent defective height, and reliability is low.Those winding wires footpath smaller transformer particularly, as certain LCD screen backlight lamp transformer, its secondary winding wire directly is 0.03mm, with thin like this lead (enamelled wire) coiling, technique for coiling complexity not only, the coiling difficulty is very big, and is easy to generate faults such as enamelled coating breaks, broken string, causes short circuit and opens circuit.
The utility model content
Technical problem to be solved in the utility model is exactly at the coil winding complex process, and the coil consistency of coiling is poor, and the shortcoming that percent defective is high provides a kind of transformer coil that does not need coiling.
The utility model solve the technical problem, and the technical scheme of employing is LCD screen backlight lamp transformer, comprise magnetic core and coupling coil, described coupling coil is enclosed within on the described magnetic core, it is characterized in that, described coupling coil is by constituting attached to the electric conducting material on the insulating body.
The beneficial effects of the utility model are, manufacture craft is simple, and the coil turn and the shape of making are accurate, good reproducibility, and the product percent of pass height, it is few to be particularly suitable for making the number of turn, the coil that the line footpath is little.
Description of drawings
Fig. 1 is the schematic diagram of the coupling coil of individual layer printed conductor formation;
Fig. 2 is the schematic diagram of the coupling coil of multilayered printed lead formation.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
The utility model has been abandoned traditional coil winding technology, adheres to electric conducting material on insulating body, constitutes transformer coupled coil, and insulating body constitutes coil rack, and electric conducting material constitutes coil windings.Can adopt typography on substrates such as epoxy resin, pottery, adhere to electric conducting material, looping or rectangular coil shape printed conductors such as copper, silver.Also can adopt deposited copperplate (printed circuit board (PCB), english abbreviation: PCB) form printed conductor and make coil by etch process.Adopt the end to end series system of multilayered printed lead, can increase coil turn; Adopt multilayered printed lead parallel connection, can improve the load capacity of coil.
The coil that the transformer coupled coil of LCD screen backlight lamp, its elementary winding and secondary winding can all adopt this printed conductor of the utility model to constitute also can mix use with conventional coil.
Referring to Fig. 1.There is shown the 3 circle coils that printed conductor constitutes, the hole 10 on the insulating body 1 is used to pass through the magnetic core (not shown), centers on the 10 one-tenth belt spiral in hole attached to the electric conducting material on the matrix 12, and suitable the cooperation with cylinder shape magnetic core constitutes transformer.This example adopts electric conducting material is printed on the making that technology on the epoxy resin-base is finished coil.
Embodiment 2
Fig. 2 is 5 coil structures that PCB overlaps, PCB1 is double sided board (being two-sided copper-clad printed circuit board (PCB)) among the figure, pass through etch process, made the square coil 2 that 3 circle printed conductors constitute on the two sides of PCB1,1 last 2 layer line circle of PCB, 5 PCB have 10 layer line circles among Fig. 2, adopt the end to end series system of each layer line circle, can obtain the winding of 30 circle coils.The connection of coil can adopt plated-through hole to connect.Rectangular opening 10 among the figure can be that the magnetic core of rectangle cooperates and constitutes transformer with section.This for example really adopts 5 blocks of multi-layer sheet (being coated with the printed circuit board (PCB) of multilayer copper foil), can also further improve coil turn.It is less that such coil is particularly suitable for making the line footpath, the LCD screen backlight lamp transformer that leakage inductance is bigger.
Claims (6)
1. LCD screen backlight lamp transformer comprises magnetic core and coupling coil, and described coupling coil is enclosed within on the described magnetic core, it is characterized in that, described coupling coil is by constituting attached to the electric conducting material on the insulating body.
2. LCD screen backlight lamp transformer according to claim 1 is characterized in that described coupling coil is made of printed circuit board (PCB).
3. LCD screen backlight lamp transformer according to claim 2 is characterized in that described printing printed circuit board (PCB) is a multi-layer sheet.
4. LCD screen backlight lamp transformer according to claim 3 is characterized in that described multiple-plate electric conducting material is connected in series and/or is connected in parallel.
5. according to claim 1,2 or 3 described LCD screen backlight lamp transformers, it is characterized in that described coil is overlapped by the polylith printed circuit board (PCB).
6. LCD screen backlight lamp transformer according to claim 5 is characterized in that the electric conducting material of described polylith printed circuit board (PCB) is connected in series and/or is connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203021866U CN201278297Y (en) | 2008-09-19 | 2008-09-19 | Backlight lamp transformer for liquid crystal display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203021866U CN201278297Y (en) | 2008-09-19 | 2008-09-19 | Backlight lamp transformer for liquid crystal display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201278297Y true CN201278297Y (en) | 2009-07-22 |
Family
ID=40895885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203021866U Expired - Fee Related CN201278297Y (en) | 2008-09-19 | 2008-09-19 | Backlight lamp transformer for liquid crystal display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201278297Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016115952A1 (en) * | 2015-01-19 | 2016-07-28 | 中兴通讯股份有限公司 | Pcb having magnetic core mounting hole, and transformer |
| CN108401368A (en) * | 2018-04-26 | 2018-08-14 | 维沃移动通信有限公司 | A kind of circuit board and electronic equipment |
-
2008
- 2008-09-19 CN CNU2008203021866U patent/CN201278297Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016115952A1 (en) * | 2015-01-19 | 2016-07-28 | 中兴通讯股份有限公司 | Pcb having magnetic core mounting hole, and transformer |
| CN108401368A (en) * | 2018-04-26 | 2018-08-14 | 维沃移动通信有限公司 | A kind of circuit board and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20150919 |
|
| EXPY | Termination of patent right or utility model |