• Display Technology in Smartphones

    Smartphone displays form a very key component of the entire package. Display technology in smartphones determines the user’s viewing experience, gaming experience, quality of the device.  Sometimes the price of the device is also dependent on display.

    Four types of display technologies dominate the market and there are few others which are worth knowing.

    Key display technologies in smartphones


    • LCD (Liquid Crystal Display) is a widely used display technology for smartphones. Light is passed from two layers of liquid crystals.


    It is important to know that LCD needs a light source as they do not emit light.

    This is further divided into two parts.


    • TFT LCD (Thin-film Transistor Liquid Crystal Display) was first display technology used in iPhone in 2007 and in first android phone.


    This technology is about producing displays using transistors.


    • Pixel: one pixel can have 4 transistors for easy switching. The technique is costlier to produce.
    • Contrast Ratio: High contrast ratio.
    • Colour: Colour reproduction is not natural.
    • Price: cheaper but not as cheap as IPS LCD.
    • IPS LCD (In-Plane Switching Liquid Crystal Display) re-arranges molecules of crystals for better view angles.
    • Pixel: Packed closely together than TFT display.
    • Contrast Ratio: High contrast ratio than TFT.
    • Colour: Colour reproduction is natural.
    • Price: cheaper than TFT.
      Lower energy consumption than TFT makes them a favourite choice of many OEM.


    For any mobile phone service training in Kottayam, knowledge of these display technologies in smartphones is necessary.


    • OLED (Organic light-emitting diode) is the latest technology in smart displays. This display does not depend on another light source.


    The Organic (Carbon-based) layer emits its own light when electricity is passed.


    • Pixel: Each Pixel emits light except when to display a black colour.
    • Contrast Ratio: High contrast ratio than LCD.
    • Colour: Colour reproduction is natural.


    Price: costlier than LCD.
    Black displays will consume less power with OLED.


    • AMOLED (Active Matrix Organic light-emitting diode) is the superior technology in smart displays. Like OLED it contains more control per pixel. The touch sensor is not part of the screen.
    • Pixel: Each pixel is controlled by more than one light source. Gives better control than OLED.
    • Light: Deeper bright colour and darker black colours are displayed.


    AMOLED had poor visibility in sunlight.

    So if you are planning to be a mobile phone technician in Kottayam, learn more about OLEDs as they are getting adopted faster and faster.


    • S-AMOLED (Super Active-Matrix Organic light-emitting diode) uses an architectural change. The touch sensor is part of the screen.
    • Pixel: Each pixel is controlled by more than one light source. Gives better control than AMOLED.
    • Light: S-AMOLED is better in displaying even in sunlight. So right now S-AMOLED gives best viewing angles and better sunlight visibility.


    It is also using lesser power so clearly, S-AMOLED is upcoming technology.

    For a mobile repair course in Kottayam, it is important to know the latest buzz as it will give you an edge.

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