Backlight Module and Liquid Crystal Display Module Using the Backlight Module
AssigneeAu Optronics Corporation
InventorsYen-Chang Huang, Kang-Chung Liu, Wen-Yuan Cheng
Life of this patent
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Abstract
This present invention discloses a backlight module and a flat display device using the backlight module. The backlight module has a plastic base having a plastic plate and a plastic frame, wherein a light guide plate is disposed on the plastic plate. The plastic plate is light reflective and has a thickness ranging from 0.2 mm to 0.9 mm. The plastic plate is used to reflect light leaking from the light guide plate. The reflectivity of the plastic plate to the visible light with wavelength ranging from 410 nm to 780 nm ranges from 80% to 95%.
Claims22
A backlight module, comprising:
- a plastic base, including:
- a plastic plate, wherein a thickness of the plastic plate ranges from 0.2 mm to 0.9 mm;
- and
- a plastic frame surrounding the plastic plate;
- a lower reflectivity element disposed on the plastic base, wherein a width of the lower reflectivity element ranges from 0.5 mm to 5 mm;
- and
- a light source, disposed on the plastic base, for emitting a visible light, wherein a wavelength of the visible light ranges from 410 nm to 780 nm, and a reflectivity of the plastic plate for the visible light ranges from 80% to 95%.
A backlight module, comprising:
- a plastic base, including:
- a plastic plate, wherein a diagonal length of the plastic plate ranges from 2.54 cm to 12.7 cm, a thickness of the plastic plate ranges from 0.2 mm to 0.9 mm;
- and
- a plastic frame surrounding the plastic plate;
- a light guide plate disposed on the plastic plate, wherein the plastic frame surrounds the light guide plate;
- and
- a light source disposed on the plastic base corresponding to a light entry surface of the light guide plate, wherein the light source emits a visible light toward the light entry surface;
- wherein a reflectivity of the plastic plate for the visible light ranges from 10% to 95%.
A backlight module, comprising:
- a plastic base, including:
- a plastic plate, wherein a thickness of the plastic plate ranges from 0.2 mm to 0.9 mm;
- and
- a plastic frame surrounding the plastic plate;
- a lower reflectivity element disposed on the plastic base and surrounded by the plastic frame;
- a light guide plate disposed on the plastic plate and surrounded by the plastic frame;
- and
- a light source disposed on the plastic base corresponding to a light entry surface of the light guide plate, wherein the light source emits a visible light toward the light entry surface;
- wherein a reflectivity of the plastic plate for the visible light ranges from 10% to 95%.
Dependencies are inferred from the claim text.