CN201054058Y - Lamp tube driving structure applied to backlight module - Google Patents

Abstract

The utility model relates to a lamp tube driving framework applied to a backlight module, which is characterized in that a first circuit board and a second circuit board are arranged on the backlight module, and the first circuit board and the second circuit board are connected by a transmission line; the first circuit board and the second circuit board are at least provided with an electronic component such as a square wave controller, two square wave change-over switches, a common connection transformer, a number driving transformer, a number connector and the like; the utility model discloses a select the setting with above-mentioned number electronic component on first circuit board and second circuit board, so dispose the framework and will effectively reduce current drive framework, the use quantity of driving transformer and connector to and the setting area of circuit board, and then can reduce fluorescent tube drive arrangement's manufacturing cost.

Description

Lamp driver architecture used in backlight modules

technical field

The utility model relates to a lamp driving structure used in a backlight module, in particular to a lamp driving structure of an LCD backlight module that can reduce the number of drive transformers and connectors used, and reduce the use area of the circuit board. .

Background technique

Please refer to FIG. 1 , which is a schematic diagram of the existing lamp driving structure used in the backlight module. It can be seen from the figure that in the existing lamp driving structure 1, the first circuit board 11 and the second circuit board 12 are arranged on the backlight On the module 13, the first circuit board 11 and the second circuit board 12 are connected by a transmission line 14; on the first circuit board 11, a square wave controller 111, a square wave switching switch 112, a digital drive The transformer 113 and the digital connector 114 are formed, and the second circuit board 12 is provided with a square wave switch 121, a digital driving transformer 122 and a digital connector 123. The first circuit board 11 The digital connectors 114 and 123 on the second circuit board 12 are respectively connected with the digital light tubes, so as to achieve the purpose of double-terminal driving. However, in the above structure, since the first circuit board and the second circuit board need to be equipped with digital driving transformers, the area of the circuit boards used together must also meet the setting requirements. Under such a setting structure, how to reduce the number of driving transformers and connectors The use of the circuit board and the reduction of the circuit board to meet the consideration of cost reduction will become an important issue that manufacturers need to solve urgently.

It can be seen that the above-mentioned existing structure still has many deficiencies, is not a good designer, and needs to be improved urgently.

In view of the deficiencies derived from the above-mentioned existing structures, the inventor of this utility model is eager to improve and innovate, and after years of painstaking research, he finally successfully developed and completed the lamp drive structure used in the backlight module.

Contents of the invention

The purpose of this utility model is to provide a lamp driving structure used in the backlight module, which selects and arranges a plurality of electronic components on the circuit board. Such a configuration structure can effectively reduce the number of driving transformers and connectors used. And the installation area of the circuit board, thereby reducing the manufacturing cost of the lamp tube driving device, and achieving the purpose of driving the lamp tube at both ends.

The second purpose of this utility model is to provide a lamp driving structure used in the backlight module, which can not only reduce the cost of the driving device, but also simplify the product manufacturing process, improve the stability of product use, prolong the service life and save settings advantage of space.

The lamp driving structure used in the backlight module that can achieve the above-mentioned new purpose is to arrange the first circuit board and the second circuit board on the backlight module, and the first circuit board and the second circuit board are connected by transmission lines; The first circuit board and the second circuit board at least need to be provided with electronic components such as a square wave controller, two square wave switches, a common connection transformer, a digital drive transformer and a digital connector; A plurality of electronic components are selectively arranged on the first circuit board and the second circuit board;

The utility model has the advantage that such a configuration structure can effectively reduce the number of driving transformers and connectors used in the existing driving structure, and the installation area of the circuit board, thereby reducing the manufacturing cost of the lamp driving device.

Description of drawings

FIG. 1 is a schematic diagram of an existing lamp drive architecture used in a backlight module;

FIG. 2 is a schematic diagram of the first implementation structure of the lamp driving structure applied to the backlight module of the present invention;

FIG. 3 is a schematic diagram of a second implementation of the lamp driving architecture used in the backlight module; and

FIG. 4 is a schematic structural diagram of the third embodiment of the lamp driving framework applied in the backlight module.

Explanation of reference signs: 1-light tube driving structure; 11-first circuit board; 111-square wave controller; 112-square wave switch; 113-driving transformer; 114-connector; 12-second circuit board; 121-Square wave switch; 122-Drive transformer; 123-Connector; 13-Backlight module; 14-Transmission line; 2-Light tube drive structure; 21-Backlight module; 222-square wave switch; 223-drive transformer; 224-connector; 23-second circuit board; 231-square wave switch; 232-co-connected transformer; 233-connector; 24-transmission line; Lamp drive architecture; 31-backlight module; 32-first circuit board; 321-square wave controller; 322-square wave switch; 323-co-connecting transformer; 324-driving transformer; Two circuit boards; 331-connector; 34-high voltage transmission line group; 4-lamp drive structure; 41-backlight module; 42-circuit board; 421-square wave controller; 422-square wave switch; Transformer; 424-drive transformer; 425-connector; 43-high voltage transmission line group; 44-common terminal of lamp tube.

Detailed ways

Please refer to the following detailed description and accompanying drawings of a preferred embodiment of the present utility model, and the technical contents and purpose effects thereof of the present utility model will be further understood; the accompanying drawings of the relevant embodiments are:

Please refer to Fig. 2, which is a schematic diagram of the first implementation structure of the lamp drive structure used in the backlight module provided by the present invention. It can be seen from the figure that the lamp drive structure 2 of the present invention includes:

A backlight module 21 is the backlight module 21 of the liquid crystal display, which can be provided for the first circuit board 22, the second circuit board 23 and the transmission line 24;

A first circuit board 22 includes a square wave controller 221, a square wave switch 222, a digital drive transformer 223 and a digital connector 224; when the DC power is input to the square wave controller 221 and the square wave switch 222, the The square wave switching switch 222 mentioned above is to receive the control signal of the square wave controller 221, convert the DC power into AC power, and output it to the primary side of the digital drive transformer 223, and then output it from the secondary side of the digital drive transformer 223. The multi-connector 224 drives the digital lamp to operate;

A second circuit board 23 comprises a square wave switch 231, a common connection transformer 232 and a number connector 233; The square wave controller 221 on the circuit board 22, through the control signal provided by the transmission line 24, converts the DC power into an AC power, and then outputs it to the primary side of the common connection transformer 232, and then outputs it to the secondary side of the common connection transformer 232. And through the number connector 233 to drive the number of lamp tubes to move; the second circuit board 23 can be provided with more than one common connection transformer 232, which can be independently or connected in series or parallel to the common connection end of the lamp tubes to reduce the The power of a single co-connected transformer 232;

A transmission line 24 is provided between the first circuit board 22 and the second circuit board 23 for transmitting the control signal output by the square wave controller 221 .

Please refer to Fig. 3, which is a schematic diagram of the second implementation structure of the lamp driving structure used in the backlight module provided by the present invention. It can be seen from the figure that the lamp driving structure 3 of the present invention includes:

A backlight module 31 is the backlight module 31 of the liquid crystal display, which can be provided for the first circuit board 32, the second circuit board 33 and the high-voltage transmission line group 34;

A first circuit board 32 includes a square wave controller 321, two square wave switches 322, a common connection transformer 323, a digital drive transformer 324 and a digital connector 325; when the DC power is input to the square wave controller 321 and the two When the wave switching switch 322 is used, the two square wave switching switches 322 receive the control signal of the square wave controller 321, and convert the DC power supply to the AC power supply, and output it to the common connection transformer 323 and the number drive transformer 324 respectively. side, and output to the second circuit board 33 from the secondary side of the common connection transformer 323 through the high-voltage transmission line group 34, and also output from the secondary side of the digital drive transformer 324, and drive the digital lamp tube through the digital connector 325;

A second circuit board 33 is provided with a digital connector 331, and the digital connector 331 receives the AC power signal input by the high-voltage transmission line group 34, and is used to drive the digital lamp tube;

A high voltage transmission line set 34 is arranged between the first circuit board 32 and the second circuit board 33 and can be used to transmit the AC power signal output by the common connection transformer 323 .

Please refer to FIG. 4 , which is a schematic diagram of the third implementation structure of the lamp drive structure used in the backlight module provided by the present invention. It can be seen from the figure that the lamp drive structure 4 of the present invention includes:

A backlight module 41 is a backlight module 41 of a liquid crystal display, which can be provided with a circuit board 42 and a high-voltage transmission line group 43;

A circuit board 42 includes a square wave controller 421, two square wave switches 422, a common connection transformer 423, a digital drive transformer 424 and a digital connector 425; When the switch 422 is used, the two square wave switching switches 422 receive the control signal of the square wave controller 421, and convert the DC power to the AC power, and then output them to the primary sides of the common connection transformer 423 and the number drive transformer 424 respectively. And output from the secondary side of the common connection transformer 423 to the common connection end 44 of the digital lamp tube through the high-voltage transmission line group 43, and then drive the digital lamp tube on the side of the backlight module 41 to operate, and also output from the secondary side of the digital drive transformer 424 , and drive the digital light tube through the digital connector 425;

A high-voltage transmission line group 43 is used to transmit the AC power signal output by the common connection transformer 423 and output the AC power signal to the common connection terminal 44 of several light tubes.

When comparing the light tube driving structure used in the backlight module provided by the utility model with other existing technologies, it has the following advantages:

The light tube drive structure used in the backlight module of the utility model is to select and arrange the electronic components on the circuit board. Such a configuration structure can effectively reduce the number of drive transformers used and the installation area of the circuit board, thereby reducing the light tube. The manufacturing cost of the driving device achieves the purpose of driving the lamp tube at both ends.

The lamp driving structure used in the backlight module of the utility model can not only reduce the cost of the driving device, but also simplify the product manufacturing process, improve the stability of product use, prolong the service life and save installation space.

The above detailed description is a specific description of a feasible embodiment of the utility model, but the described embodiment is not intended to limit the patent scope of the utility model, and any equivalent implementation or All changes shall be included in the patent scope of this case.

Claims (4)

1. A lamp driving architecture applied to a backlight module, characterized in that: it comprises: A backlight module is a backlight module of a liquid crystal display, which is provided for the first circuit board, the second circuit board and the transmission line; A first circuit board includes a square wave controller, a square wave switch, a digital drive transformer and a digital connector; A second circuit board includes a square wave switch, a common transformer and a digital connector; A transmission line is arranged between the first circuit board and the second circuit board for transmitting the control signal output by the square wave controller. 2. The light tube drive architecture used in the backlight module according to claim 1, characterized in that: said second circuit board is provided with at least one common connection transformer, which is independently or connected in series or parallel to the common connection end of the light tube , to reduce the power of a single co-connected transformer. 3. A lamp driving architecture used in a backlight module, characterized in that: it comprises: A backlight module is a backlight module of a liquid crystal display, which is provided for the first circuit board, the second circuit board and the high-voltage transmission line group; A first circuit board includes a square wave controller, two square wave switches, a common connection transformer, a digital drive transformer and a digital connector; A second circuit board is provided with a plurality of connectors, and the said connectors receive the AC power signal input by the high-voltage transmission line group, and are used to drive the digital lamps; A high-voltage transmission line set is arranged between the first circuit board and the second circuit board, and is used for transmitting the AC power signal output by the common transformer. 4. A lamp driving architecture used in a backlight module, characterized in that it comprises: A backlight module is a backlight module of a liquid crystal display, which is provided for a circuit board and a high-voltage transmission line group; A circuit board includes a square wave controller, two square wave switches, a common connection transformer, a digital drive transformer and a digital connector; A high-voltage transmission line group is used to transmit the AC power signal output by the common connection transformer, and output the AC power signal to the common connection terminal of several lamp tubes.

Images