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一个器件的可靠性,与它的结构,工艺以及使用均有密切关系。如电子束显示器件与其它电真空器件相比,有它们的共同方面,但也有很多特殊内容,这些特殊内容是由以下结构和工艺因素所决定的。 1.高的工作电压 显象管最后阳极电压的高低,是影响图象质量的重要因素之一。随着电视的不断发展,屏幕尺寸越来越大,要求屏电压也越来越高,一般均在12KV以上,有的甚至超过20KV。由于存在这样高的工作电压,电子束以极高的能量轰击荧光屏及其它电极,这样必然引起一系列的不可靠因素,如:
The reliability of a device, and its structure, technology and use are closely related. Such as electron beam display devices and other vacuum devices compared to their common aspects, but there are many special content, these special content is determined by the following structure and process factors. 1. High operating voltage CRT cathode voltage level is one of the important factors affecting the image quality. With the continuous development of television, the screen size is getting bigger and bigger, the screen voltage is required to be higher and higher, generally above 12KV, and some even exceed 20KV. Due to such a high operating voltage, the electron beam bombards the phosphor screen and other electrodes with very high energy, which inevitably causes a series of unreliable factors such as: