A mechanical damage detection device and method for LED fluorescent glue
A technology of damage detection and fluorescent glue, which is applied in the direction of measuring devices, fluorescence/phosphorescence, and the use of stable tension/pressure to test the strength of materials, etc., can solve material rupture, affect white LED packaging performance and reliability, and lumen degradation, etc. problems, to achieve the effects of high flexibility, low experimental cost, and simple device operation
Active Publication Date: 2022-02-11
HOHAI UNIV CHANGZHOU
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The cracks and voids in the LED fluorescent glue begin to delaminate around the material interface, so that the outside air and moisture can penetrate the LED fluorescent glue to form various interface areas. The generation of these areas can lead to lumen degradation and material rupture, ultimately affecting Performance and Reliability of White LED Packages
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 Construction
[0024] The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0025] Such as Figure 1~3 As shown: an embodiment of the present invention provides: a mechanical damage detection device for LED fluorescent glue, comprising: a tensile test device 7, a laser emitting device and a photoluminescence acquisition device; a tensile test device 7, a laser emitting device And the photoluminescence collection device is arranged on the experimental platform 1, and described photoluminescence collection device comprises integrating sphere test system 8 and sleeve 5, and described sleeve 5 bottoms open square through hole, and the square through hole of described sleeve 5 Tensile test device 7 is set below the through hole, integrating ...
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
Login to View More Abstract
The invention discloses a mechanical damage detection device and method for LED fluorescent glue, comprising a stretching test device, a laser emitting device and a photoluminescence collection device; the clamps of the stretching test device fix two ends of a sample, and are used for pulling the sample Stretching experiment; the laser emitting device is used to emit laser light to irradiate the sample, and when the laser irradiates the sample, it will excite the fluorescent powder of the sample to perform photoluminescence; the photoluminescence collection device is used to collect the reflected light signal of photoluminescence; The invention reflects the evolution process of mechanical damage by simultaneously collecting the photoluminescence signal and photothermal signal of the fluorescent powder / silica gel composite material under the condition of external load, and the device is simple to operate, high in flexibility, and low in experiment cost.
Description
technical field [0001] The invention discloses a mechanical damage detection device and method of LED fluorescent glue, and relates to the technical research field of mechanical property characterization of composite materials. Background technique [0002] LED has the advantages of good luminous effect, high efficiency, long life and high reliability. It has been widely used in various lighting fields and has broad development prospects. As an important composite material for white LED packaging, LED fluorescent glue is widely used in various industries because of its excellent material properties. In-depth study of the mechanical properties of composite materials, design the use of materials according to their properties, in order to improve the reliability and safety performance of composite materials. LED fluorescent glue is usually coated on the LED blue chip, which is an important packaging material for white LED light conversion. When the LED is working, due to the ...
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 Patents(China)
IPC IPC(8): G01N3/08G01N3/06G01N21/63G01N21/64
CPCG01N3/068G01N3/08G01N21/64G01N21/63G01N2203/0017G01N2203/0075G01N2203/0262G01N2203/04G01N2203/0641
Inventor 樊嘉杰孙翔陈威王珍唐芝彬费孝峰何凯
Owner HOHAI UNIV CHANGZHOU