How LCD Screen does it ?

Discussion in 'Miscellaneous Equipment' started by Mustafa Umut Sarac, Oct 23, 2013.

  1. Mustafa Umut Sarac

    Mustafa Umut Sarac Member

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    How it would be possible to address every each pixel and send them different signals without interrupt at a LCD screen or camera sensor ?
    I know there are transistors but how to send information to one pixel when there are thousands of them around ?
    Can anyone explain if possible with transistor theory.
    And how an ic compute the complex commands n such tiny space ?
    We are all using such equipment and its huge problem for me.
    How many transistors do we need to make an basic calculator for example ?

    Umut
     
  2. Hexavalent

    Hexavalent Subscriber

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    Look up active and passive LCD matrix displays, and CCDs. Typically pixels are addressed in a row/column fashion, not "all at once".

    Not sure what this has to do with analog photography though.
     
  3. polyglot

    polyglot Member

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    Small ones are typically a matrix. Each pixel (or element in a simple display like calculator) is connected to a column wire and a row wire, to activate a single pixel you drive the correct pair of wires. For a 6-digit 7-segment display, you would normally have 6 columns (the digits) and 7 rows (the segments) and scan through accordingly. You need to scan the whole display fast enough (100Hz+) that the eye doesn't notice the flicker.

    I suggest you do some googling. There are excellent free logic-design courses online that will teach you all of this, including how all the state machines work, etc.

    This is not very analogue and I suggest we stop here.