PDP荧光粉参数测量装置的研制

Phosphors parameters measurement for the application in plasma display panels

等离子平面显示(PDP)用荧光粉的主要参数有发射光谱,色坐标,激发光谱,相对亮度等。由于PDP荧光粉的激发光源在紫外 真空紫外波段,因此需要一套真空紫外激发 荧光光谱仪装置来测量这些参数。介绍了一种采用30W氘灯激发光源的PDP粉体测试装置。通过光路的聚焦式设计和高增益放大器的采用,实现了120～300nm波段,分辨率好于2nm的激发光谱测量。测试结果表明发射光谱和激发光谱的重复性好于±2%,色坐标误差小于±0.001。

The key parameters of phosphors for the application in plasma display panels (PDP) are emission spectrum, CIE coordinates, relative brightness etc. A set-up of VUV excitation/fluorescence spectrometer is needed because its excitation wavelength range is in VUV. A device is introduced which is equipped with 30 W deuterium lamp as excitation source. Focus method is used in optics layout and a high DC gain amplifier is used. The excitation spectrum with resolution better than 2.0 nm is obtained. The measuring result expresses the reproducibility error of emission spectrum and excitation spectrum is better than ±2%, and CIE coordinates error is less than ±0.001.