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LED area-light source module used for LCD
| Details |
Inventors: Lin, Ching-Huang; Tsai, Yi-Hung;
Assignee: Toppoly Optoelectronics Corp. (Chu-Nan, TW)
Primary Examiner: Vu; David
Assistant Examiner:
Attorney, Agent or Firm: Quintero Law Office
An LED area-light source module used for an LCD. A metal housing constituting a flat base, a bending portion, and at least one raised portion, in which the bending portion is an extension of the flat base and the overlapping portion between the bending portion and the flat base serves as a lying space. An LED circuit board is assembled into the lying space and has a plurality of chips, at least one connecting pad and at least one concave portion. An optical plate module is assembled on the flat base of the metal housing. At least one wire has one end welded on the connecting pad and the other end connected to a power supply. An edge between the exposed portion and the unexposed portion of the wire is installed on the bottom side of the concave portion. |
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DETAILED DESCRIPTION OF THE INVENTION First Embodiment FIG.
4 is a solid view of an LED area-light source module according the first embodiment of the present invention.
FIG.
5 is an exploded view an LED area-light source module according the first embodiment of the present invention.
An LED area-light source module 40 comprises a metal housing 42, an LED circuit board 44, an optical plate module 46, a power supply 48 and two wires 60.
The metal housing 42 constituting a flat base 50, a bending portion 52 and three raised portions 54.
The bending portion 52 is an extension of one side of the flat base 50 and the overlapping portion therebetween provides a lying space 53 for installing the LED circuit board 44.
The three raised portions 54 respectively protrude from the other sides of the flat base 50.
The LED circuit board 44 comprises a plurality of LED chips 56 and two concave portions 45, and the two wires 60 are welded on the LED circuit board 44 adjacent to the concave portions 45 respectively, thus providing electrical connection to the power supply 48.
The optical plate module 46 is a stack of a reflective plate 46I, a light-guiding plate 46II and a plurality of diffusion plates 46III to provide transformation and uniformity of the light source and specific optical characteristics.
FIG.
6A is a top view of the LED circuit board 44 shown in FIG.
5.
FIG.
6B is a partially enlarged view of the connection between the LED circuit board 44 and the wire 60 shown in FIG.
6A.
For electrically connecting the LED circuit board 44 to the power supply 48, one end of the wire 60 is welded to a connecting pad 58 on the LED circuit board 44, and the other end of the wire 60 is connected to the power supply 48.
Preferably, the two concave portions 45 are formed adjacent to the two connecting pads 58 and outside the lying space 53, and the concave portion 45 constituting a linear bottom side 45I and two curved sidewalls 45II.
There is no limit in the size of the concave portion 45, the symmetry of the curved sidewalls 45II and the style of the curved sidewall 45II
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