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What Does a Laptop LCD Inverter Do?

By DavidB • Mar 19th, 2009 • Category: LCD and Inverter Issues

LaptopParts300x300 chinaflcp What Does a Laptop LCD Inverter Do?

LCD screens require the use of an inverter to supply power to the screen’s back lighting. Backlighting is used in smaller LCD screens such as laptops to produce higher brightness and readability factors. While the back lighting could be produced form any number of sources, such as LEDs, incandescent bulbs or an electroluminescent panel, the inverter is most commonly used in association with the electroluminescent panel or ELP. ELPs are becoming more common in laptops as the size of the screens get larger and larger. The ELPs need constant relatively high voltage AC current. This is where the inverter comes into play.

An inverter is the opposite of a rectifier converting DC current into AC current; static inverters are used in LCD technology and have no moving parts. After the current is inverted to AC, it can be used at any need voltage or frequency. The AC current allows the thin film transistor and components to present colors in the specified arrangement for the desired picture. The current is split after the inversion process to power each pixel or set of pixels in the display which are then altered and refracted to produce the picture again using AC current as power.

LaptopParts580x100 All What Does a Laptop LCD Inverter Do?

The inverter is one of the most important parts of an LCD display whether it is a TV or a laptop screen. Without the inverter no images or picture would be possible within the small case of a laptop. The inverter allows for smaller sizes and thicknesses of laptops and better screen resolutions as well as far more control over the picture itself. The inverter is how the screen allows the end user to specify color variances and adjustments. These adjustments take place at the electrical level and change the voltages that are applied to the screen to present better visibility and lower energy consumption. Without the inverter laptops would be far larger and less user friendly.

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9 Responses »

  1. Mr.LCD repair on April 9th, 2009 at 2:32 pm:

    Thank you for this useful post. I found your blog through google. Your blog is quite interesting.. And I have added your site to my bookmarks :) Repairing LCD is not something you can do it yourself. Atleast not for the people who are not computer savvy. Finding a right technician makes all the difference..

  2. Prince George on September 16th, 2009 at 5:10 pm:

    hey,
    i have hp pavilion dv6000. the lcd screen is very dim, black, one willnot be able to see anyting without close look. Do you think this is the inverter? please help

  3. Dave on October 21st, 2009 at 7:50 am:

    Hi,
    Yep i would say it was the inverter. Normally cost around £10-20. If this doesn’t fix the problem i would change the backlight.

  4. Susanna on November 16th, 2009 at 11:48 am:

    Hi I on my laptop only half of my screen is lit do you think it is the inverter?

  5. Tina on November 16th, 2009 at 6:42 pm:

    Hi I was wondering I have a Toshiba P100 with a 17″ LCD laptop it started with a strip down the screen now it is about 3 inches wide makes things very hard to see. The screen has not been damaged in anyway I was wondering if a LCD converter would fix that because the difference is $160 for a new screen. I dont understand why it did this but how do I fix it
    Thanks

  6. Jamie Wink on November 30th, 2009 at 8:21 am:

    Hi there, I just come across this blog whilst hunting around online as I’m looking for some information on LCD TVs!. It’s an interesting blog so I have bookmarked this site and intend to revisit you soon to allow more time for a more indepth read when I’ll more free time.

  7. Ben on December 22nd, 2009 at 12:34 pm:

    I’ve got a laptop that looks normal half of the time and then the other half the icons and all text are very blurry. It’s not a resolution issue as it happens at post test also. Any thoughts, inverter or on board video card?

  8. Kojo on January 2nd, 2010 at 3:10 pm:

    My thinkpad laptop screen is just displays blasck with no dim image at all. But when i connect it to an external monitor it displays alright. Tried other ibm lcd screens but still does not work. ould it be my motherboard?

  9. jose luis on January 23rd, 2010 at 6:45 am:

    nesecito saber mas o menos cual es el daño de mi portatil.
    despues de 3 dias de andar bien de repente la laptop encendia bien pero no salia la pantalla.segui intentando y cuando cambiaba la posicion de la pantalla extremadamente abierta completamente encendia y se veia bien.
    pero al mover la pantalla se apaga o se va la pantalla me gustaria saber su opinion porfavor.

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