Connecting structure for cold cathode fluorescent tubes of backlight module

Abstract

A connecting structure for cold cathode fluorescent tubes of a backlight module provided to make the cold cathode fluorescent tubes in the backlight module have better connecting effect; the backlight module includes at least a controlling circuit board, at least one cold cathode fluorescent tube connecting with the controlling circuit board, each cold cathode fluorescent tube has more than one electrode connecting pin. Wherein a lateral edge of the controlling circuit board is provided with more than one connecting area for direct welding of the electrode connecting pins, the connecting areas at least have a leading end for leading and connecting the electrode connecting pins.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic perspective view of a prior art;

FIG. 2 is an anatomic perspective view of a preferred embodiment of the present invention;

FIG. 3 is a perspective view after assembling of the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

As shown in FIG. 2 which is an anatomic perspective view of a preferred embodiment of the present invention, it is depicted in the drawing with a preferred embodiment of a connecting structure for cold cathode fluorescent tubes of a backlight module. The connecting structure is located between a controlling circuit board 10 and the cold cathode fluorescent tubes 20, and comprises more than one connecting area 13 for fixedly welding thereto directly of electrode connecting pins 21 of the cold cathode fluorescent tubes 20; the connecting areas 13 are provided on one of the lateral sides of the controlling circuit board 10. Each of the connecting areas 13 has one or more than one leading end 14 for leading and connecting the electrode connecting pins 21; it is depicted in the drawing that each connecting area 13 has a leading end 14 for the convenience of explanation.

he leading ends 14 can be the tailing ends of conductive strips 12 provided on the controlling circuit board 10 or metallic sheets embedded in the ends of the conductive strips 12. Wherein the connecting areas 13 are tidily provided on the lateral edge of the controlling circuit board 10, and can be recessed notches on the lateral edge of the controlling circuit board 10, or cut slits or narrow seams on the lateral edge of the controlling circuit board 10. In this drawing, it is depicted for explanation with the recessed notches on the lateral edge of the controlling circuit board 10.

As shown in FIG. 3 which is a perspective view after assembling of the preferred embodiment of the present invention, wherein each cold cathode fluorescent tube 20 has two electrode connecting pins 21 that are respectively fixedly welded with solder 15 between every two neighboring connecting areas 13 directly, thereby a firm, non-separable and non-releasable connection state can be obtained, and each electrode connecting pin 21 and its corresponding leading end 14 can be kept in a good electric connection state.

Therefore, practicing of the present invention can effectively reduce the cost of production, save material, and can lower the costs of preparing materials, purchasing and examination. By virtue that the cold cathode fluorescent tubes 20 are connected laterally with the controlling circuit board 10, the surface of the controlling circuit board 10, the space of the present invention will be less limited, no problem of covering dust or influence on heat sinking etc. results.

Moreover, by virtue that the cold cathode fluorescent tubes 20 are connected laterally with the controlling circuit board 10, and the connecting areas of the electrode connecting pins 21 and its corresponding leading ends 14 are not enveloped by the solder 15, there will be no problem of generating of surface oxide films to influence good electric contact.

The above description and drawings of the embodiment given are only for illustrating the present invention, and not for giving any limitation to the scope of the present invention; it will be apparent to those skilled in this art that various equivalent modifications or changes without departing from the spirit of this invention in the structure, assembling and features etc. shall also fall within the scope of the appended claims.

Claims

1. A connecting structure for cold cathode fluorescent tubes of a backlight module, said backlight module includes at least a controlling circuit board, at least a cold cathode fluorescent tube connecting with said controlling circuit board, each of said cold cathode fluorescent tubes has more than one electrode connecting pin; said connecting structure is located between said controlling circuit board and said cold cathode fluorescent tubes, and comprises more than one connecting area for fixedly welding thereto directly of electrode connecting pins of said cold cathode fluorescent tubes; said connecting areas are provided on one of two lateral sides of said controlling circuit board, each of said connecting areas at least has a leading end for leading and connecting said electrode connecting pins.

2. The connecting structure for cold cathode fluorescent tubes of a backlight module as in claim 1, wherein: said connecting areas are recessed notches on said edge of said controlling circuit board.

3. The connecting structure for cold cathode fluorescent tubes of a backlight module as in claim 1, wherein: said connecting areas are cut slits on said edge of said controlling circuit board.

4. The connecting structure for cold cathode fluorescent tubes of a backlight module as in claim 1, wherein: said connecting areas are narrow seams on said edge of said controlling circuit board.

5. The connecting structure for cold cathode fluorescent tubes of a backlight module as in claim 1, wherein: said leading ends are ends of conductive strips provided on said controlling circuit board.

6. The connecting structure for cold cathode fluorescent tubes of a backlight module as in claim 1, wherein: said leading ends are metallic sheets embedded in said controlling circuit board in connecting with ends of said conductive strips.