交流等离子体显示屏放电的瞬态辐射特性研究

Transient Optical Emission Characteristics in Gas Discharge of AC Plasma Display Panel

为深入理解彩色交流等离子体显示屏的气体放电机制及提高器件性能,对三元混合气体He-Ne(26%)-Xe(3.7%)放电的辐射光谱组成和光谱线的瞬态过程进行了实验研究。通过采用高速增强型CCD(ICCD)和光电倍增管(PMT)测量混合气体不同压强时,在一个维持电压脉冲期间,放电所产生的真空紫外和红外各主要谱线的强度随时间的变化,研究了充气压强对谱线强度、辐射延迟、辐射持续时间的影响,并分析了放电产生的真空紫外辐射总强度和可见光光谱线强度随充气压强的变化关系。实验结果表明,随着充气压强的提高,真空紫外和红外光谱辐射延迟缩短,辐射持续时间减小,并且真空紫外辐射总强度增大,可见光强度减小。

Transient optical emission characteristics in discharge of the gases,a mixture of He-Ne （26%）-Xe （3.7%） filled in plasma display panel（PDP）, were studied with a high speed intensified CCD camera（ICCD） and a photoelectron-multiplier-tubo（PMT）. Time evolution of the ultraviolet（UV） and infrared（IR） emission intensifies,at different pressures during a single sustaining voltage pulse,was measured to understand the influence of gas pressure on specral hne intensity, emission delay and emission duration. The results show that the gas pressure significantly affects the emission characteristics. For example, as the pressure increases, both the UV and IR emission delay and duration time decrease;while visible hght intensity reduces, the total UV intensity increases.