日本东芝公司最近开发出一种新型电视荧光屏,广告宣传上称C3彩色显像管,它是洁净透明涂层(Clean and Clear Coat)显像管的简称。 由于彩色显像管屏幕玻璃内表面荧光粉后导电层上加有2万伏以上的直流正电压,使玻璃屏幕外表面上产生静电感应。电视机周围飞扬的尘土,在荧光屏表面静电作用下,很容易吸附在屏幕上,或吸进电视机芯里去。这层土会降低图像亮度、清晰度和明暗对比度。机芯电路板上积聚较厚尘土后,会影响元器件的散热,甚至影响电路的正常工作。静电感应会影响人体的生态 Toshiba Japan recently developed a new type of television screen advertising called C3 color picture tube, which is the abbreviation of Clean and Clear Coat tube. As the inner surface of the color picture tube screen glass phosphor rear conductive layer plus more than 20,000 volts DC positive voltage, so that the glass screen surface electrostatic induction. The dust flying around the TV, the surface of the screen electrostatic effect, it is easy to adsorbed on the screen, or inhaled into the TV movement. This layer of soil will reduce the image brightness, sharpness and brightness contrast. Accumulation of thick circuit board movement dust, it will affect the heat dissipation components, or even affect the normal operation of the circuit. Electrostatic induction can affect the body’s ecology