WHAT IS LCD AND HOW IT WORKS? | FEATURES OF LCD

WHAT IS LCD AND HOW IT WORKS? | FEATURES OF LCD

Are you searching for the information about the display technology called LCD(Liquid crystal display),all you have to do is just go through the information given below you will get a clear cut  information about the LCD technology.For your easy understanding the some information is structured as question and  answer type hope you can understand.

WHAT IS LCD (LIQUID CRYSTAL DISPLAY)?

Liquid crystal refers to compounds which are in crystalline arrangement but can flow like liquid. The light source coming from the back light passes through crystal material that can be aligned to either block or transmit the light LCD technology uses Twisted Nematic Liquid Crystals so the crystals will be twisted to 90 degrees. Here every pixel is divided into 3 sub pixels those are red, blue and green.

 STRUCTURE OF LCD

It’s called “LIQUID CRYSTAL DISPLAY” because these compounds have a crystalline arrangement of molecules and still they flow like a liquid.

In LED flat panel  display ,two glass plates each containing a light polarizer at right angles to the other plate ( simply  one polarizer is vertical and the other one is horizontal)they sandwich the liquid crystal display.

   SO HOW IT WORKS 

·        As earlier said there are two glass plates one of the glass plate rows of horizontal transparent are built and columns of vertical conductors are put into the other plate.

·        The intersection of two conductors defines a pixel position.

·        Normally the molecules are aligned in the “ON STATE”.

·        Polarized light passing through the material is twisted so that it will pass through the opposite polarizer.

·        To turn of the pixel we apply a voltage for the two intersecting conductors to align the molecules so that the light is not twisted.

·        This type of panel lcd is  known as a “PASSIVE-MATRIX LCD”.

LET’S TALK ABOUT ADVANTAGES AND   DISADVANTAGES

•  FIRSTLY ADVANTAGES
  

1.  The main advantage is the power consumption, it consumes less power.
2.   It is very compact, thin and light especially in comparison with bulky, heavy CRT displays
3.  Little heat emitted during operation, due to low power  consumption    
4. It can be made in almost any size or shape.

• NOW DISADVANTAGES

1.     Limited viewing angle in some older and cheaper moniters.

2.     Uneven backlighting in some televisions and moniters.

3.     Black levels may not be as dark as required because individual liquid crystals cannot completely block all of the backlight from passing through

4.     Dead and stuck pixels may occur during manufacturing or after a period of use.

Hope all you got the idea about LCD TECHNOLOGY .In case of any other doubts please leave in the comment section.If u liked the blog please feel free to share 

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