The difference between positive and negative LCD screens
Blaze Display Technology Co., Ltd. | Updated: Nov 27, 2018
LCD monochrome LCD screens usually have two display types: positive display and negative display. Let's take the segment code screen as an example to introduce the differences between these two display types:
1. Positive display
The so-called positive display means that the color of the displayed content is darker than the background color, such as black characters on yellow-green background (yellow-green screen) and black characters on gray-white background (FSTN). This type of screen has a better display effect under sunlight.
As shown in the 2 pictures above, the background is gray/green, the characters are black, and the color of the characters is darker than the background, which means it is positive display;
There is also a simple way to distinguish, that is, the color of most of the positive display characters is black. I just said that this kind of screen has a good display effect in sunlight. It is precisely because the characters are black that it is not easy to display them in sunlight caused by influence.
2. Negative display
The so-called negative display means that the color of the displayed content should be lighter than the background color, such as white text on a blue background (blue screen), white text on a black background (VA segment screen). This type of screen has relatively high contrast, and the display effect indoors is better. Better than regular display.
As shown in the above 2 pictures, the background is black/blue, the characters are white, and the color of the characters is lighter than the background color, that is, negative display;
There is also a simple way to distinguish it, that is, the color of most negative display characters is white, because the LCD screen itself does not emit light. The color of negative display characters is actually the color of the backlight through the glass, and the backlight is white. The words are white. In other words, the negative display must have a backlight to display the content.
At the same time, there is another very common way to use negative display, which is color screen printing. After adding screen printing, the LCD screen will become colorful and diverse. Please see:
It can be said that because of this approach, LCD screens 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 negative With the display + color screen printing method, this is also a product that is very worthy of everyone’s choice.
