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本文介绍了用于平板电视显示的Mn激活的直流场致发光粉(dcEL)的制备和性能。研究了灼烧过程,包铜工艺和形成过程。适于显示屏用的粉末磷光体含有0.1-0.5％的Mn和0.25-0.35％的Cu(重量比),铜包在粉末的表面上。 尽管粉末dcEL的流明效率至今还较低,但用高峰值功率的电压脉冲激发能达到可以使用的亮度。显示屏的交义效应也可以压低,因为亮度随电压变化的非线性很强。为了延长屏的寿命采用一种硅油密封发光屏比较有效。 已制成的实验性dcEL屏其对角线为13吋,具有50176个像元,可以显示广播电视图像。图像亮度达10呎—朗伯,对比度为20:1,极限分辨率在水平和垂直两个方向上大约达150条电视线,灰度级达16级。
This article describes the preparation and performance of Mn-activated DC electroluminescent powder (dcEL) for flat-panel television displays. The burning process, the copper clad process and the formation process were studied. Powder phosphors suitable for displays contain 0.1-0.5% Mn and 0.25-0.35% Cu (weight ratio), which is coated on the surface of the powder. Although the luminous efficiency of powder dcELs is still low to this day, it can be used with a high peak power voltage pulse excitation. The cross-talk effect of the display can also be depressed because the brightness varies strongly with voltage. In order to extend the life of the screen using a silicone oil sealed screen more effective. The fabricated experimental dcEL screen has a diagonal of 13 inches and has 50,176 pixels for displaying broadcast television images. Image brightness of up to 10 feet - Lambertian, contrast ratio of 20: 1, the ultimate resolution in both horizontal and vertical directions about 150 TV lines, grayscale of 16.