[a back light module]
OwnerYi-Chun Hoinventor
Life of this patent
Estimating the term…
Abstract
A back light module comprising a light-guiding plate, a lamp, a lower frame and an upper frame is provided. The light-guiding plate has a light-emitting surface. The lamp is positioned on one side of the light-guiding plate. Light from the lamp travels towards the light-guiding plate and emerges from the light-emitting surface of the light-guiding plate. The lower frame supports the light-guiding plate and the lamp and has a plurality of heat-dissipating slots formed on the sidewall close to the lamp. The upper frame covers the lower frame and has a window for exposing the light-emitting surface of the light-guiding plate. Through the heat-dissipating slots on the sidewalls of the lower frame, excess heat produced by the lamp due to a long continuous operation is carried away.
Claims27
A back light module, comprising:
- a light-guiding plate having a light-emitting surface;
- a lamp positioned on one side of the light-guiding plate, wherein light from the lamp travels to the light-guiding plate and emerges from the light-emitting surface of the light-guiding plate;
- a lower frame for holding the light-guiding plate and the lamp, wherein the lower frame has a plurality of heat-dissipating slots close to the lamp;
- and
- an upper frame positioned over the lower frame, wherein the upper frame has a window for exposing the light-emitting surface of the light-guiding plate.
A back light module, comprising:
- a light-guiding plate having a light-emitting surface;
- a plurality of lamps positioned around the light-guiding plate, wherein light from the lamps all travels to the light-guiding plate and emerges from the light-emitting surface of the light-guiding plate;
- a lower frame for supporting the light-guiding plate and the lamps, wherein the lower frame also has a plurality of heat-dissipating slots close to the lamps;
- and
- an upper frame positioned over the lower frame, wherein the upper frame also has a window for exposing the light-emitting surface.
25 The back light module of claim 15, wherein the module furthermore comprises at least an optical film positioned on the light-emitting surface of the light-guiding plate.
Dependencies are inferred from the claim text.