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为了降低制作成本,提高生产效率,实现液晶显示器在大尺寸品种上的高画质化,文章介绍研制的一种新型等离子体激发发光平板背光源。该电光源无电极,在两片平板玻璃中间充入纯氙气(气压2.67×104Pa),玻璃的外表面上密封一层透明水膜作为导电介质,以1.1mm厚的玻璃板作为介质阻挡层,在高频交变电压的作用下,产生等离子体,激发荧光粉发光。发光亮度可达3000cd/m2,最佳激发频率10.2kHz,启动电压6kV,发光均匀度大于92%;并综合评价了驱动电压、激发频率和样品厚度等因素对背光源发光特性的影响。
In order to reduce production costs, improve production efficiency and achieve high image quality of large-size LCDs, a new type of plasma-excited light-emitting panel backlight is introduced. The electric light source without electrodes, in the middle of two flat glass filled with pure xenon (pressure 2.67 × 104Pa), the outer surface of the glass sealed with a layer of transparent water film as the conductive medium to 1.1mm thick glass as a dielectric barrier, Under the action of high frequency alternating voltage, a plasma is generated to excite the phosphor to emit light. Luminous brightness up to 3000cd / m2, the best excitation frequency of 10.2kHz, the starting voltage of 6kV, luminescence uniformity greater than 92%; and evaluation of the driving voltage, excitation frequency and sample thickness and other factors on the light-emitting characteristics of the backlight.