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笔者对蓝屏手机情有独钟,最近特地对屏幕背光作了一番了解,知道手机采用两种照明方式:一是 LED 背光照明,目前大多数机型都采用这种方式。即在液显以及按键的旁边装上贴片式 LED 发光二极管,由一只三报管驱动,其基极受 CPU 控制来达到开、关背光灯的目的;另一种是楚光照明,如爱立信的 T28,主要由装在液显背面和按键旁边的一张荧光纸来照明。在 T28中,该荧光纸的电源两引脚直接接 CPU,由 CPU 直接驱动。该荧光纸工作过程类似日光灯管,首先要经脉冲高压启动,然后再
I have a soft spot for blue screen mobile phones, recently made a special understanding of the screen backlight, I know the phone uses two lighting: First, LED backlighting, the current most models are used this way. That is, liquid display and buttons next to the chip mounted LED light-emitting diode, driven by a newspaper executive, its base by the CPU control to achieve the purpose of opening and closing the backlight; the other is the Chu light, such as Ericsson T28, mainly by the liquid back and buttons next to a fluorescent paper to illuminate. In T28, the power of the fluorescent paper directly connected to the two pins CPU, directly driven by the CPU. Fluorescent paper works similar to fluorescent tubes, the first pulse high voltage to start, and then