BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional view showing a construction of a backlight module of the prior art.
FIG. 2 is a sectional view showing a construction of another type of backlight module of the prior art.
FIG. 3 is a sectional view of a backlight module of the present invention.
FIG. 4 is a magnified view of the backlight module of the present invention.
FIG. 5 is sectional view showing another construction of the backlight module of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIG. 3, a light source installation of an integral backlight module of the present invention is essentially comprised of a light emitting diode module 20 provided on one edge of a light guild plate 10 to guide beams emitted from the light emitting diode module 20 into the light guide plate 10 through the edge of the light guide plate 20, thus to convert the parallel light inputted from the light emitting diode module 20 into vertical light on a plane for outputting to achieve the luminance performance results as expected.
The light emitting diode module 20 is comprised of multiple light emitting diodes 21; and any two neighboring light emitting diodes 21 are alternatively arranged in a zigzag fashion. As illustrated in FIG. 3, a preferred embodiment of the present invention has all the light emitting diodes arranged on a flexible circuit board 30; the light emitting diode module 20 and the flexible circuit board 30 are secured on a locating member 40 (e.g., a plastic frame); multiple locating portions 41 are alternatively arranged in a zigzag fashion on the locating member 40; and any two neighboring locating portions are abutted to each other by means of a slope 411.
To assemble, an adhesive 50 is first applied at where between the flexible circuit board 30 and the locating member 40 as illustrated in FIG. 4 so that the flexible circuit board 30 is assembled in position to the locating member 40 depending on the positions of those locating portions 41 alternatively at different levels. Accordingly, when each light emitting diode 21 is secured to its respective locating portion 41, any two neighboring light emitting diodes 21 are alternatively arranged in a zigzag fashion. Once the beams emitted from each light emitting diode 21 enter into the light guide plate 10, a crossing point P of beams emitted from each pair of abutted light emitting diodes 21 at their maximal angles as illustrated in FIG. 3 merely falls at where between the light guide plate 10 and the light emitting diode module 20 to effectively eliminate the phenomenon of darker and brighter bands.
Furthermore, one side of the light guide plate 10 closer to the light emitting diode module 20 is made in a platform structure as illustrated in FIGS. 3 and 4; or in the alternatively zigzag structure as illustrated in FIG. 5 and all the light emitting diodes 21 are alternatively arranged in zigzag fashion by compromising the light guide plate 10 to achieve the same purpose of effective elimination of the phenomenon of darker and brighter bands.
The prevent invention provides an improved structure of a light source of backlight module, and the application for a utility patent is duly filed accordingly. However, it is to be noted that the preferred embodiments disclosed in the specification and the accompanying drawings are not limiting the present invention; and that any construction, installation, or characteristics that is same or similar to that of the present invention should fall within the scope of the purposes and claims of the present invention.
Patent Application
20080019148
