LCD monochrome LCD usually has two display types: positive display and negative display. Today, we will take the segment code screen as an example to introduce the difference between these two display types.
1, showing
The so-called preview means that the color of the content displayed on the LCD screen is darker than the background color, such as the black characters on the yellow-green background (yellow-green screen) and the black characters on the gray-white background (FSTN). Such a screen generally displays better in the sun.
As shown in Figure 2 above, the bottom is gray/green, the characters are black, and the color of the characters is darker than the background, which is a positive display;
There is also a simple way to distinguish, that is, most of the characters being displayed are black characters. Just mentioned that this kind of screen displays well in the sun, and it is precisely because the characters are black that they are not easily affected in direct sunlight.
2. Negative display
The so-called negative display means that the color of the displayed content is lighter than the background color, such as white characters on a blue background (blue screen) and white characters on a black background (VA code screen). This kind of screen has a relatively high contrast, and the indoor display effect is better than the front display.
As shown in Figure 2 above, the background is black/blue, the characters are white, and the color of the characters is lighter than the background, which is a negative display;
There is also a relatively simple way to distinguish, that is, the color of most negative words is white, because the LCD screen itself does not emit light, and the color of negative words is actually the color printed by backlight through the glass, and the words printed by backlight white are also white. In other words, the negatively displayed text must be backlit to display the content.
At the same time, there is also a very common negative display method, that is, color screen printing, and the LCD screen after color screen printing will become rich and varied in color. Please see:
It can be said that because of this practice, the LCD screen will become more distinctive and innovative. Many customers open molds in our company to customize various LCD screens. In order to reflect the high-end effect, they will choose the negative display+color screen printing method, which is also a product worthy of everyone's choice.