Light emitting module and display device using the same

Abstract

The invention provides a light emitting module and a display device using the same. The light emitting module includes a light emitting unit, a first phosphor, and a second phosphor. An absorption band of the second phosphor is substantially in a wavelength range of 400 to 600 nm, an absorption rate peak of the second phosphor occurs at an absorption peak wavelength, the absorption peak wavelength is in a wavelength range of 560 to 600 nm, and an absorption rate of the second phosphor for light having a wavelength longer than the absorption peak wavelength by 30 nm or more is less than 50% of the absorption peak.

Description

technical field [0001] The invention relates to a light emitting module and a display device using the light emitting module, in particular to a light emitting device and a display device with better energy efficiency. Background technique [0002] The improvement of white light emitting technology can not only benefit the lighting needs of ordinary life, but also widely benefit electronic products such as display devices. For example, through the improvement of energy efficiency and color gamut area of ​​the white light backlight of the liquid crystal display, better image quality and reduced power consumption can be obtained. In the case of LED (Light Emitting Diode), there are two main means of producing white light, one is to generate white light by mixing the light emitted by blue, green and red LEDs, and the other is to use blue LEDs and green, green, and red LEDs to generate white light. Combination of yellow and / or red phosphors. After phosphors absorb blue light wi...

AI Technical Summary

Problems solved by technology

In the wavelength range where the passband of the green filter spectrum and the passband of the red filter spectrum intersect, a relatively high ratio of the white light backlight of the display device will be filtered by the filter, so the energy formed waste of

[0005] As mentioned above, the absorption spectra of the existing SCASN and KSF used to generate white light mainly only cover the wavelength range below 500 nanometers, and cannot effectively utilize the passband of the green filter spectrum and the red filter spectrum The energy in the wavelength range where the passbands intersect, therefore, the existing white light emitting device needs to be improved significantly for the energy utilization efficiency of the light filtered out by the filter

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