Method for manufacturing light-emitting element and light-emitting element manufacturing device
A technology of light-emitting elements and manufacturing methods, applied to electroluminescent light sources, devices for coating liquid on the surface, electrical components, etc., capable of solving problems such as chromaticity deviation of light-emitting elements and chromaticity of light-emitting elements not becoming a constant value, etc., To achieve the effect of preventing the deviation of chromaticity
Active Publication Date: 2013-03-06
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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Problems solved by technology
[0016] However, even if a light-emitting element is manufactured by ejecting a constant weight of fluorescent resin from the air pressure distributor 107, the chromaticity of the manufactured light-emitting element may not become a constant value.
That is, in the conventional manufacturing equipment, there is a problem that the chromaticity of the manufactured light-emitting element varies.
Method used
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[0036] First, explain figure 1 The outline of the apparatus structure of the manufacturing apparatus 1 of the light-emitting element (hereinafter abbreviated as the manufacturing apparatus 1) of the embodiment shown is shown.
[0037] The manufacturing device 1 is provided with: a storage unit 3 for storing reference data; a container 4 for storing a fluorescent resin, which is a resin containing a known concentration of phosphor particles; a coating device 5 for spraying a predetermined amount of The fluorescent resin is coated on the light emitting element 2; and the phosphor particle measuring device 6 measures the concentration of phosphor particles contained in the fluorescent resin ejected from the container 4 at predetermined time intervals. The reference data herein refers to data showing the relationship between the concentration of phosphor particles contained in the fluorescent resin, the amount of the fluorescent resin to be applied, and the chromaticity of the li...
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The purpose of the present invention is to provide a method for manufacturing a light-emitting element whereby the occurrence of uneven chromaticity in a light-emitting element is minimized. The present invention provides a method for manufacturing a light-emitting element (2) having a light-emitting source by coating the light-emitting source with a fluorescent resin discharged from a coating device (5) which retains the fluorescent resin containing fluorescent particles. The method comprises measuring a first concentration that is the concentration of said fluorescent particles contained in said fluorescent resin discharged from said coating device (5) and coating said light-emitting source with an amount of said fluorescent resin determined on the basis of said measured first concentration and reference data representing a relationship between the coating amount of said fluorescent resin and the concentration of said fluorescent particles in which the chromaticity of said light-emitting element is uniform.
Description
technical field [0001] The present invention relates to a method of manufacturing a light emitting element having a light emitting source such as an LED (Light Emitting Diode) chip, and a manufacturing apparatus of the light emitting element. Background technique [0002] In the past, research and development of light-emitting elements obtained by combining LED chips as light-emitting sources and phosphor particles (fluorescent pigments, fluorescent dyes, etc.) Light excitation emits light of a color different from that of the LED chip (for example, refer to Patent Document 1). [0003] As such a light-emitting element, white light-emitting elements (generally called white LEDs) that combine, for example, an LED chip that emits blue light or ultraviolet light, and wavelength-converted blue light to emit yellow light have been commercialized. The phosphor particles of the light combine to obtain white light. [0004] In Patent Document 1, as an example of such a light-emitt...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01L33/50H01L33/00
CPCH01L2933/0041H01L33/502H05B33/10H01L33/48H01L33/50B05B12/084B05C11/1005G01N2021/8427
Inventor 追风宽岁長浜功幸西胁健太郎壁谷泰宏
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD