Backlight Module and Liquid Crystal Display Device
AssigneeShenzhen China Star Optoelectronics Technology Co., Ltd.
InventorYewen Wang
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Abstract
The present invention provides a backlight module and liquid crystal display device. The backlight module includes diffuser plate, substrate, fluorescent layer and light-emitting chip. The fluorescent layer is disposed on a light-entering surface of diffuser plate, and the fluorescent layer includes quantum dot (QD). The light-emitting chip is disposed on the substrate and the light-emitting chip is between substrate and fluorescent layer for irradiating on the fluorescent layer to excite the quantum dots to emit light to form white backlight source. The present invention uses quantum dots to effectively increase luminance, color saturation and avoid chroma offset. The quantum dots can emit uniform light and reduce thickness of the backlight module.
Claims19
A backlight module, which comprises:
- a diffuser plate and a substrate, disposed oppositely, the substrate being a aluminum substrate for dissipating heat of the light-emitting chip;
- a fluorescent layer, disposed on a light-entering surface of the diffuser plate, the fluorescent layer comprising quantum dot (QD), and the quantum dot material comprising;
- CdSe, ZnSe and CdS, formed by predefined quality and ratio;
- and
- a light-emitting chip, the light-emitting chip comprising UV LED chip and/or blue LED chip, the light-emitting chip being disposed separately from the fluorescent layer, the light-emitting chip being disposed on the substrate and the light-emitting chip being disposed between the substrate and the fluorescent layer for irradiating on the fluorescent layer to excite the quantum dots to emit light to form white backlight source.
A backlight module, which comprises:
- a diffuser plate and a substrate, disposed oppositely;
- a fluorescent layer, disposed on a light-entering surface of the diffuser plate, the fluorescent layer comprising quantum dot (QD);
- and
- a light-emitting chip, the light-emitting chip being disposed on the substrate and the light-emitting chip being disposed between the substrate and the fluorescent layer for irradiating on the fluorescent layer to excite the quantum dots to emit light to form white backlight source.
A liquid crystal display device, which comprises:
- a backlight module;
- the backlight module further comprising:
- a diffuser plate and a substrate, disposed oppositely;
- a fluorescent layer, disposed on a light-entering surface of the diffuser plate, the fluorescent layer comprising quantum dot (QD);
- and
- a light-emitting chip, the light-emitting chip comprising UV LED chip and/or blue LED chip, the light-emitting chip being disposed on the substrate and the light-emitting chip being disposed between the substrate and the fluorescent layer for irradiating on the fluorescent layer to excite the quantum dots to emit light to form white backlight source.
Dependencies are inferred from the claim text.