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Dotinversion的source driver输出波形图1是Dot inversion的source driver输出波形。使用Dot inversion方式的TFT LCD显示屏,它相邻显示点的输出极性是不一样的,因此我们可以在图1中看到,相邻的两个输出间,其输出波形的走向恰好相反。但是所有奇数输出的波形,也就是第1、3、5等等的输出,其输出波形是很类似的。同时所有的偶数输出也会很类似。如同前面几期的文章所述,当source driver把所有的显示数据都抓好了以后,便可以通过LS(latch signal)的发号施令,将所有的显示数据送到模拟电路去。然后依照相对应的灰阶电压,送出电压到液晶显示屏上。
Dotinversion source driver output waveform Figure 1 is Dot inversion source driver output waveform. Using the Dot inversion TFT LCD display, the output polarity of adjacent display points is not the same, so we can see in Figure 1 that the output waveforms of the two adjacent output lines are opposite in direction. However, the output of all odd-numbered waveforms, that is, the 1st, 3rd, 5th, and so on, is very similar in output waveform. At the same time all the even output will be very similar. As mentioned in the previous articles, when the source driver grasps all the display data, it can send all the display data to the analog circuit through the LS (latch signal) command. And then in accordance with the corresponding grayscale voltage, sending voltage to the LCD screen.