How to control il liquido cristallo molecole con luce
Jul 10, 2023| How to control il liquido cristallo molecole con luce
In the design of LCD, we filled between the two pieces of polarizing film can change the light propagation direction and the liquid crystal layer by the match to the membrane packaging. Due to light after the first piece of polarizing film only to comply with the requirements in the polarization direction of the light, so the liquid crystal molecules are not under the control of electric field, the orientation of molecules for the initial state of "alignment", so the molecular orientation of the propagation of light through liquid crystal was also turn 90 degree . Due to the polarization direction of the second piece of polarizing film and an Angle of 90 degrees to the first place, then be reversed 90 "light in all by the second piece of polarizing film shoot, make the LCD screen presents a state of full" white ", when the liquid crystal molecules under applied electric field strength control is enough to make it according to the direction of the electric field vertically, the light is not through the liquid crystal molecules, Its direction does not change and can direct injection, the rays that is nothing, but after the second block of polarizing film are all stop light, LCD screen that is full of "black" state.Actually can also be in the design of liquid crystal molecules when applying an electric field of the state as a whole "white" state of the screen, but due to considering an image of the bright area generally more than dark area, so the screen all the "white" condition not liquid crystal molecules are applying an electric field is more conducive to save electricity.