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CN-121985661-A - Light-emitting diode (LED) packaging device for sky-cyan light source

CN121985661ACN 121985661 ACN121985661 ACN 121985661ACN-121985661-A

Abstract

The application provides a sky-cyan light source LED packaging device, and belongs to the technical field of luminescent materials. The light source LED packaging device for the sky-blue comprises a light emitting substrate, wherein the light emitting substrate comprises fluorescent powder, the fluorescent powder comprises blue-green fluorescent powder and green fluorescent powder, the light emitting peak wavelength of the blue-green fluorescent powder is 490-500 nm, the molecular formula of the blue-green fluorescent powder is (Ba 1‑x‑y Sr x Eu y )Si 2 N 2 O 2 , wherein x is more than or equal to 0.001 and less than or equal to 0.3, y is more than or equal to 0.001 and less than or equal to 0.1, the blue-green fluorescent powder is of an orthogonal structure and is crystallized by a space group Pcca.

Inventors

  • HE JINHUA
  • WANG RUI
  • XU JUNFENG

Assignees

  • 江苏博睿光电股份有限公司

Dates

Publication Date
20260505
Application Date
20251231

Claims (13)

  1. 1. The light source LED packaging device of the sky cyan is characterized by comprising a luminous matrix, wherein the luminous matrix comprises fluorescent powder; The fluorescent powder comprises blue-green fluorescent powder; The peak wavelength of luminescence of the blue-green fluorescent powder is 490-500 nm, the molecular formula of the blue-green fluorescent powder is (Ba 1-x-y Sr x Eu y )Si 2 N 2 O 2 , wherein x is more than or equal to 0.001 and less than or equal to 0.3, y is more than or equal to 0.001 and less than or equal to 0.1, and the blue-green fluorescent powder is of an orthogonal structure and is crystallized by a space group Pcca.
  2. 2. The sky-cyan light source LED package device according to claim 1, wherein 0.001. Ltoreq.x≤0.1 and 0.001. Ltoreq.y≤0.03.
  3. 3. The light source LED package of claim 1, wherein said phosphor further comprises a green phosphor having a peak emission wavelength of 500nm to 530nm.
  4. 4. The azure light source LED package device of claim 3, wherein the green phosphor comprises at least one of a molecular formula M 3-a Al 5 O 12 :aCe 3+ 、(Ba,Sr) 2-b SiO 4 、Ca c Mg(SiO 4 ) d Cl 2 ; wherein M is at least one of Y, lu and Ga; and parameter a, b, c, d satisfies the following condition: a is more than or equal to 0.001 and less than or equal to 0.5, and b is more than or equal to 0.001 and less than or equal to 0.5; 0.5, 7.5≤c≤8.5, 3.5≤d≤4.5.
  5. 5. The sky-cyan light source LED package device according to claim 3, wherein the mass ratio of the blue-green phosphor is a, a satisfies 8% to 40% and the mass ratio of the green phosphor is B, B satisfies 60% to 92%, based on the total mass of the phosphor.
  6. 6. The azure light source LED package device of claim 1, wherein the luminescent substrate further comprises a fluorescent glue.
  7. 7. The azure light source LED package device of claim 6, wherein said fluorescent glue comprises silicone gel.
  8. 8. The sky-cyan light source LED package device according to claim 6, wherein the mass ratio of the fluorescent glue to the fluorescent powder is 0.7-2.5:1.
  9. 9. The azure light source LED package device of claim 1, further comprising an LED mount, two LED chips, and a bond wire; The LED bracket is provided with a cavity structure and comprises an anode and a cathode; The two LED chips are arranged at the bottom of the cavity structure and are respectively connected with the anode and the cathode of the LED bracket through welding wires; The light emitting substrate is filled in a gap between the two LED chips and the cavity structure.
  10. 10. The azure light source LED package device of claim 9, wherein the LED chip comprises a blue light chip having a peak wavelength of 450nm to 45 nm.
  11. 11. The azure light source LED package device of claim 9, wherein the material of the LED mount comprises at least one of PCT, EMC.
  12. 12. The light source LED package of claim 9, wherein said bonding wire comprises any one of gold wire, silver wire, gold-silver alloy wire, and copper wire.
  13. 13. The azure light source LED package device of claim 9, wherein two of said LED chips are disposed in series or parallel at the bottom of said cavity structure.

Description

Light-emitting diode (LED) packaging device for sky-cyan light source Technical Field The application relates to the technical field of luminescent materials, and in particular relates to a sky-cyan light source LED packaging device. Background With the current development of the automobile industry and the high-speed intelligent development, the intelligent driving technology of the automobile is approaching to maturity and starts to be applied in a wide range, and the intelligent driving system not only depends on advanced sensors, algorithms and control systems, but also needs an efficient and accurate information interaction mode to communicate with drivers and other participants on the road. The intelligent driving indicator lamp of the automobile is used as one of key components of information interaction, and the performance and reliability of the intelligent driving indicator lamp are directly related to driving safety and driving experience. At present, mainstream vehicle enterprises such as ideal, hillside, millet and the like have been led to deploy intelligent driving marker lamps commonly called "blue lamps" in mass production vehicle types, wherein the installation positions cover the areas of the center of front and rear vehicle lamps, the lower part of an outer rearview mirror, the two sides of the vehicle tail and the like, the XY color point range of the marker lamps is (X=0.012-0.2-0.2-0.04, Y=0.494-0.4-0.32-0.32), and the luminous color is sky-cyan. However, the conventional sky-cyan light source LED package device has poor light-emitting brightness and poor aging resistance, so that it is necessary to provide a novel sky-cyan light source LED package device. Disclosure of Invention Based on the above problems, the present application provides a sky-cyan light source LED package device having excellent light emission luminance, adjustable color point and excellent aging resistance. In a first aspect, the present application provides a sky-cyan light source LED package device. The sky-cyan light source LED packaging device comprises a light emitting substrate, wherein the light emitting substrate comprises fluorescent powder, the fluorescent powder comprises blue-green fluorescent powder, the light emitting peak wavelength of the blue-green fluorescent powder is 490-500 nm, the molecular formula of the blue-green fluorescent powder is (Ba 1-x-ySrxEuy)Si2N2O2, wherein x is more than or equal to 0.001 and less than or equal to 0.3, y is more than or equal to 0.001 and less than or equal to 0.1, and the blue-green fluorescent powder is of an orthogonal structure and is crystallized by a space group Pcca. Based on the scheme, the application can improve the luminous performance of the sky-cyan luminous on the basis of realizing the sky-cyan luminous, especially improves the luminous intensity of the sky-cyan luminous, and also improves the ageing resistance of the fluorescent material, and compared with the traditional sky-cyan scheme, the color point of the fluorescent material is flexibly adjustable. In some embodiments, the fluorescent powder further comprises green fluorescent powder, and the luminescence peak wavelength of the green fluorescent powder is 500 nm-530 nm. Based on the scheme, the blue-green fluorescent powder and the green fluorescent powder can be matched, the luminous intensity of the sky-cyan luminous is better improved on the basis of realizing the sky-cyan luminous, the ageing resistance of the fluorescent material is better improved, and the flexibility of color point adjustment is better improved. In some embodiments, the green phosphor comprises at least one of the formulas M3-aAl5O12:aCe3+、(Ba,Sr)2-bSiO4、CacMg(SiO4)dCl2, wherein M is at least one of Y, lu, ga, and the parameter a, b, c, d satisfies 0.001. Ltoreq.a≤0.5, 0.001. Ltoreq.b≤0.5, 7.5. Ltoreq.c≤8.5, 3.5. Ltoreq.d≤4. Based on the scheme, on the premise of meeting the color point requirement, the luminous brightness and the ageing resistance of the device can be further improved, and the falling point and the slope can be flexibly adjusted in the target color zone. In some embodiments, the blue-green phosphor is 8% -40% by mass and the green phosphor is 60% -92% by mass based on the total mass of the phosphor. Based on the scheme, the matching degree of the green fluorescent powder and the blue-green fluorescent powder can be further improved, so that the luminous intensity and the long-term aging resistance of the fluorescent powder are further improved. In some embodiments, the luminescent matrix further comprises a fluorescent glue. In some embodiments, the fluorescent glue comprises a silicone gel. In some embodiments, the mass ratio of the organic silica gel to the fluorescent powder is 0.7-2.5:1. Based on the scheme, the organic silica gel and the fluorescent powder are favorable to form a luminous matrix with uniform components, so that the luminous quality of the whole device is ensured. In some embo