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Luminescent device and its operation

A technology of a light-emitting device and an operation method, which is applied to electrical components, electrical solid-state devices, circuits, etc., can solve the problems of unsatisfactory yellow light quantity and small phosphorous layer light quantity.

Inactive Publication Date: 2007-11-21
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the second method is that, since the thickness of the phosphor layer is rather small, the amount of light absorbed by the phosphor layer is also small
Therefore, the amount of yellow light emitted is not satisfactory

Method used

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  • Luminescent device and its operation
  • Luminescent device and its operation
  • Luminescent device and its operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] FIG. 1A is a schematic diagram of a light emitting device 10 according to an embodiment of the present invention. Please refer to Fig. 1A, the light-emitting device 10 includes a first light-emitting device, labeled R, for providing first light emission, a second light-emitting device, labeled G, for providing second light emission, a third light-emitting device , marked as B, for providing the third emitted light, and a fourth light emitting device, marked as A, used for providing the fourth emitted light. The wavelength ranges of the first, second, third, and fourth emitted lights are different from each other, but together cover the spectrum of visible light. The visible light spectrum includes a range of wavelengths falling between approximately 380nm (nanometers) and 780nm, which ranges from violet through blue, green, yellow, orange, and red. Outside this range are ultraviolet rays with wavelengths less than 380nm and infrared rays with wavelengths greater than 7...

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PUM

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Abstract

An illuminating device includes a premier illuminator to eradiate a premier light of a premier wave scope, a secondary illuminator to eradiate a secondary light of a secondary wave scope, a third illuminator to eradiate a third light of a third wave scope, a fourth illuminator to eradiate a fourth light of a fourth wave scope. The premier, secondary, third and fourth wave scope are different and covering visible range.

Description

technical field [0001] The present invention relates to a light-emitting device, in particular to a four-color light-emitting device capable of emitting white light and a method for operating the four-color light-emitting device. Background technique [0002] Light emitting diodes (LEDs), commonly used as light sources, illuminators, indicator lights, and displays, are well-known solid-state light-generating devices that generate light with a peak wavelength in a specific region of the spectrum. LEDs are advantageous for use as light sources for several reasons. LEDs are more mechanically robust when compared to light bulbs or fluorescent lamps (fluorescent lamps) because they can generally withstand greater shock or vibration. In addition, LEDs generally have a long life, reducing the frequency of replacing damaged diodes. When it is necessary to replace an LED, it is also easier and more economical than replacing a fluorescent source. In addition, LEDs have the advantag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L25/00H01L33/00
CPCH01L2224/48247H01L2224/49113
Inventor 黄川庭
Owner IND TECH RES INST