The principle of liquid crystal display

Wiki Wikipedia on the https://en.wikipedia.org/wiki/Liquid_crystal, applications of Liquid crystals section, a lot of English can not understand, only know the image of a general meaning. The use of polarizing film (high school physics to talk about the nature of light waves) liquid crystal in the electric field changes, when the power is not able to let light waves chaos, so that the next polarizer can be passed. If the power is on, the liquid crystal changes will not pass.

The following is a random translation:

Liquid crystals find wide use in Liquid crystal displays, which rely on the optical properties of certain Liquid Crystalli NE substances in the presence or absence of a electric field.
Liquid crystal is widely used in liquid crystal display, which relies on the characteristics of liquid crystal certain liquid crystalline in electric field and without electric fields.

In a typical device, a liquid crystal layer (typically 4μm thick) sits between-polarizers that is crossed (oriented At 90°to one another).
On a general LCD, the liquid crystal layer has a thickness of 4 microns, sandwiched between the two perpendicular polarizing plates in the direction of each other.

The liquid crystal alignment is chosen so, its relaxed phase are a twisted one (see Twisted nematic field effect). [8]
The liquid crystal is distorted in the normal (relaxed) state. （...... ）

This twisted phase reorients light that have passed through the first polarizer, allowing its transmission through the Seco nd polarizer (and reflected back to the observer if a reflector is provided).
This time the distorted state changes (reorient) the light through the first polarizer so that it passes through the second polarizer correctly (and then, if there is a reflective device, it can be reflected to the viewer).

The device thus appears transparent. When a electric field is applied to the LC layer, the long molecular axes tend to align parallel to the electric field th US gradually untwisting in the center of the liquid crystal layer.
The device is therefore transparent. When an electric field is added to the liquid crystal layer, the long axis of the molecule tends to be arranged parallel to the electric field, so the liquid crystal does not distort in the liquid crystal layer.

In this state, the LC molecules does not reorient light, and so the light polarized at the first polarizer are absorbed at the SE Cond Polarizer, and the device loses transparency with increasing voltage.
In this case, the liquid crystal molecule does not change (reorient) light, through the first layer of the polarizer light through the second layer of polarizer, after the addition of voltage has lost the transmittance.

In this, the electric field can is used to make a pixel switch between transparent or opaque on command.
In this way, an electric field can use commands to toggle a pixel before it is transparent and opaque.

Color LCD systems Use the same technique, with a color filters used to generate red, green, and blue pixels. [8]
The color LCD system uses the same technology, using color filters to make intenseness, green, and blue pixels.

Chiral smectic liquid crystals is used in ferroelectric LCDs which is fast-switching binary light modulators. Similar principles can is used to make other liquid crystal based optical devices. [51]
Chiral near liquid crystal is used in ferroelectric liquid crystal, ferroelectric liquid crystal is fast switching binary (two kinds? ) Light regulator. Similar principles can be used in other devices depending on the optical properties of the liquid crystal.

Liquid Crystal tunable filters is used as electrooptical devices, e.g., in hyperspectral imaging.
The Liquid crystal adjustable filter can be used on electronic devices, for example, in ultra-wide spectrum imaging.

The principle of liquid crystal display