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Phosphor and its applied light-emitting device and backlight module

A technology of light-emitting devices and phosphors, applied in optics, semiconductor devices, nonlinear optics, etc.

Active Publication Date: 2019-12-27
AMTRAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Red phosphors include nitride-doped europium phosphors and fluoride-doped manganese phosphors

Method used

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  • Phosphor and its applied light-emitting device and backlight module
  • Phosphor and its applied light-emitting device and backlight module
  • Phosphor and its applied light-emitting device and backlight module

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Embodiment Construction

[0020] A number of embodiments of the present invention will be disclosed below with the accompanying drawings. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some known and commonly used structures and elements will be shown in a simple schematic way in the drawings.

[0021] figure 1 It is a schematic top view of the backlight module 100 according to some embodiments of the present invention. The backlight module 100 includes a backplane 110 , a light emitting device 200 and a driver 130 . The light emitting devices 200 are arranged in an array on the backplane 110 . For example, the light emitting device 200 is arranged in an array along the first direction D1 ...

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Abstract

The invention relates to a fluorescent body, a light emitting device applying the same and a backlight module. The fluorescent body comprises nitride doped europium fluorescent powder and fluoride doped manganese fluorescent powder, wherein the weight ratio of the nitride doped europium fluorescent powder and the fluoride doped manganese fluorescent powder is within a range of 17.5% to 22.5%. According to the configuration, the spectrum width of light emitted by the fluorescent body in a red light area can be improved so as to improve the color saturation of an image and reduce the residual light time of the fluorescent body.

Description

technical field [0001] The invention relates to a fluorescent body and a light-emitting device and a backlight module for its application. Background technique [0002] In liquid crystal display technology, the backlight module used to continuously drive the light source as the mainstream, but in recent years, the method of periodically driving the light source (such as scanning backlight) has been widely used to improve the dynamic contrast of the display screen. [0003] In the method of periodically driving the light emitting sources, generally speaking, while driving each pixel on the liquid crystal panel in a timely manner, these light emitting sources are periodically driven sequentially in accordance with the configured multiple light emitting sources, so that the backlight module partially Provides light to the front LCD panel. In this way, the problem of motion blur caused when dynamic images are displayed can be prevented. However, in the backlight module using t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50G02F1/13357
CPCG02F1/133603H01L33/502
Inventor 虞宏达
Owner AMTRAN TECH CO LTD