POWER SUPPLY MODULE AND LIGHTING TEST DEVICE FOR BACKLIGHT MODULE HAVING THE SAME

Abstract

A power supply module includes a pad and a fixing unit. The pad includes a plurality of anode power supply terminals and a plurality of cathode power supply terminals. The plurality of the anode power supply terminals and the cathode power supply terminals are alternately disposed. The fixing unit is capable of pressing an anode terminal and a cathode terminal of a printed circuit film from a backlight module to electrically connect the anode and cathode terminals to the anode power supply terminal and the cathode power supply terminal, respectively. Therefore, the backlight module having various types of anode and cathode terminals may be tested easily and efficiently.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features and advantages of the present invention will become readily apparent by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:

FIG. 1 is a perspective view illustrating an exemplary embodiment of a power supply module in accordance with the present invention;

FIG. 2 is a top plan view illustrating the power supply module in FIG. 1 for supplying a driving current to a first backlight module;

FIG. 3 is a cross-sectional view illustrating the power supply module taken along line of I-I′in FIG. 2;

FIG. 4 is a perspective view illustrating the power supply module in FIG. 1 for supplying a driving current to a second backlight module;

FIG. 5 is a perspective view illustrating the power supply module in FIG. 1 for supplying a driving current to a third backlight module;

FIG. 6 is a perspective view illustrating the power supply module in FIG. 1, for supplying a driving current to a fourth backlight module;

FIG. 7 is a perspective view illustrating the power supply module in FIG. 1 for supplying a driving current to a fifth backlight module;

FIG. 8 is a plan view illustrating an exemplary embodiment of a lighting test device for a backlight module in accordance with the present invention;

FIG. 9 is an enlarged view illustrating portion “A” in FIG. 8; and

FIG. 10 is an enlarged view illustrating portion “B” in FIG. 8.

Claims

1. A power supply module comprising: a pad including a plurality of anode power supply terminals and cathode power supply terminals which are alternately disposed; anda fixing unit which presses an anode terminal and a cathode terminal of a printed circuit film to electrically connect the anode and cathode terminals to the anode power supply terminal and the cathode power supply terminal, respectively.

2. The power supply module of claim 1, wherein the anode power supply terminals and the cathode power supply terminals are alternately disposed along a first direction and a second direction perpendicular to the first direction.

3. The power supply module of claim 2, wherein the anode power supply terminals and the cathode power supply terminals have a substantially flat shape and are disposed in a matrix shape of 3×2.

4. The power supply module of claim 2, wherein a first separation distance between a cathode power supply terminal and an anode power supply terminal adjacent to the cathode power supply terminal is less than a second separation distance between the anode terminal and the cathode terminal.

5. The power supply module of claim 2, wherein a plurality of point light sources is mounted on the printed circuit film to be electrically connected with each other in parallel, a plurality of the anode or the cathode terminals respectively supplying a driving current to the point light sources are disposed in a connection area formed on the printed circuit film, the connection area having a first width, andthe anode and the cathode power supply terminals each have a second width larger than the first width.

6. The power supply module of claim 1, wherein the fixing unit comprises: a body covering the pad;a cushion being disposed at an edge of the body and pressing the anode terminal and the cathode terminal; anda pressing bar being connected to the body and rotating the body to press the anode terminal and the cathode terminal into electrical contact with the anode power supply terminal and the cathode power supply terminal, respectively.

7. A lighting test device for a backlight module, comprising: a substrate having a plurality of test regions defined thereon;a pad including a plurality of anode power supply terminals and cathode power supply terminals alternately disposed along a row direction and a column direction at a test region of the plurality of test regions;a controller controlling a driving current supplied to the anode power supply terminals and the cathode power supply terminals; anda fixing unit pressing an anode terminal and a cathode terminal of a printed circuit film, which protrude from the backlight module, to connect the anode and cathode terminals to the anode power supply terminal and the cathode power supply terminal, respectively.

8. The lighting test device for a backlight module of claim 7, wherein the substrate includes a conductive pattern electrically connecting the controller to the anode and cathode power supply terminals.

9. The lighting test device for a backlight module of claim 8, wherein the substrate further includes a variable resistor electrically connected to the conductive pattern to control the driving current supplied to the anode and cathode power supply terminals.

10. The lighting test device for a backlight module of claim 8, wherein the substrate further includes a current displaying part which displays an amount of the driving current supplied to the anode and cathode power supply terminals.

11. The lighting test device for a backlight module of claim 8, wherein the substrate further includes an external power supply terminal receiving the driving current from an external power supply unit when lighting of the backlight module is tested precisely.