Liquid crystal tablet, the use of bistable liquid crystal, his working principle is pressure induction, when writing, there is pressure will show the text. The principle of the display is this, when the external light irradiation on the liquid crystal tablet, under pressure, the liquid crystal has turned, a place of liquid crystal can reflect the light, man reflected into our eyes, and not under pressure, the light through the liquid crystal irradiation on the back of the black background film, so as not to see.

Will not hurt the baby's eyes, rest assured when using, my little niece has been using no matter what display, there are radiation, liquid crystal slightly lower, how many will hurt the eyes. Sit well, keep your distance, and you'll be fine.

Staring at a screen for too long won't blind your eyes, it will only cause them to lose vision due to excessive fatigue.

Looking at any computer screen for too long can hurt your eyes. Because the eyes focus on one place for a long time, there will be fatigue and pressure of the eye fluid, resulting in the deformation of the crystal. However, previous CRT screens, due to their low refresh rate and low frequency of progressive scanning, were more harmful to the eye by focusing and electromagnetic radiation at times you didn't notice. At present, liquid crystal refresh rate is high, but also relatively stable, electromagnetic radiation is very small, less damage to the eyes.

It is recommended not to look too close to the screen, and to take a few moments to look away and relax and give an eye massage to minimize damage to your eyes. You can't stare at it all the time and put your eyes on high tension.