A making process for white light light-emitting diode
A technology for light-emitting diodes and a manufacturing method, which is applied to luminescent materials, chemical instruments and methods, and the use of gas discharge lamps, etc., can solve the problems of uneven white light color, poor white light spectral wavelength distribution and continuity, errors, etc.
Inactive Publication Date: 2003-12-31
LITE ON OPTO TECH (CHANGZHOU) CO LTD +1
View PDF0 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0008] However, this kind of white light formed by combining the spectral structures of the primary color phosphors is limited by the influence of the specific spectral structure of individual phosphors, so the distribution and continuity of the spectral wavelengths of the white light formed are not as good as real sunlight, resulting in Disadvantages such as uneven color and low saturation of white light
Although human eyes can ignore these phenomena and only see white light, under the sensing of some high-precision optical detectors, such as video cameras or cameras, the color rendering is still low in nature, and it is also That is, there will be errors when restoring the color of the object, so the white light source produced in this way is only suitable for general lighting
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 2
[0025] Regarding the second embodiment of using phosphorescent powder to produce a color-changing light-emitting diode, the steps are as follows:
[0026] 1. Synthesize a recipe as Y 2 o 3 : Eu-type phosphor, such as (Y 1.9 Eu 0.1 )O 3 , its synthesis method can utilize solid-state reaction method, chemical synthesis method, such as citrate gel method, co-precipitation method or microemulsion method, etc.
[0027] 2. Synthesize a formula as SrAl 2 o 4 : Eu, Dy-type phosphors, such as (Sr 0.94 Eu 0.04 Dy 0.02 ) Al 2 o 4 , its synthesis method can utilize solid-state reaction method, chemical synthesis method, such as microemulsion method, precipitation method or microemulsion method, etc.
[0028] 3. Synthesize a formula as BaMgAl 10 o 17 : Eu-type phosphor, such as (Ba 0.9 Eu 0.1 )MgAl 10 o 17 , its synthesis method can utilize solid-state reaction method, chemical synthesis method, such as citrate gel method, co-precipitation method or microemulsion method, e...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| luminous efficiency | aaaaa | aaaaa |
| luminous efficiency | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a process for making white light emitting diode using light emitting diode in combination with a plurality of powder material possessing fluorescent property characterized by that, the process uses a light emitting diode capable of emitting ultraviolet light as excitation optical source, to excite fluoropher that can produce red light, green light and blue light, at the same time use the fluorescent characteristic of one or more fluoropher for reinforcing and decoration, four beams of fluorescent lighting containing the wave range can produce white light through mixing. The white light obtained by the fluorescence reinforcing and decorating process has the advantage of high brightness and good color rendering property.
Description
technical field [0001] The invention relates to a method for manufacturing light-emitting diodes, in particular to a method for making white light-emitting diodes by using light-emitting diodes (LEDs) in conjunction with various powders with fluorescent properties. Background technique [0002] White light is a multi-color mixed light, and what can be perceived as white light by the human eye is a mixed light that includes at least two or more wavelengths. For example, when the human eye is stimulated by red, blue, and green light at the same time, or when it is stimulated by blue light and yellow light at the same time, it can feel white light. Therefore, LED light sources that emit white light can be produced based on this principle. There are mainly five known manufacturing methods of white light LEDs: the first method is to use three LEDs made of aluminum gallium indium phosphide (AllnGaP), gallium phosphide (GaN) and gallium nitride (GaN), respectively control Red, gre...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80C09K11/84H01L33/00
CPCY02B20/181Y02B20/00
Inventor 王健源刘如熹纪喨胜苏宏元
Owner LITE ON OPTO TECH (CHANGZHOU) CO LTD