LCD or LED

Hey all,

Got a broken screen on my acer aspire 6920g

Should I buy a LED or a LCD?

I have found a direct replacement glossy WXGA screen but it's a LED with a converter.

Which is better?

Also can someone point out the benefits/differences

 

You have to stick with the kind your notebook came with. All the connections and circuitry are different.

 

It has a converter to connect to original qiring

 

can anyone help anymore?

 

Certainly not standard Acer stuff, even the voltage sent to the transformer before the cold cathode display is different, in LED displays it's all build into the data cable going to the panel.

 

Thanks for the extra input, Makes it a little clearer in what you was implying.

Same guy is selling LCD version of the same screen for only an extra £30.

 

Also to be clear all of these panels are Liquid Crystal Displays (LCDs), what's changing is the backlight method.

LEDs use LEDs (duh) to light the screen, these only require a low voltage and don't tend to dim as quickly.

Older displays use CCFL (cold cathode fluorescent lamps) to light the display, they require a LARGE voltage which is created by the inverter, the lamps dim over time and are easily broken and the inverter is delicate too.

As you can see the electrical requirements for each are quite different so the circuitry is, with LEDs the drivers are simple and built into the motherboard. The types therefore are not interchangeable, if your machine shipped with a CCFL LCD then it will need a CCFL replacement or upgrade (to a higher resolution, this also usually needs a different inverter and data cable) if it shipped with an LED LCD panel then again you need an LED replacement or upgrade (usually you just have to worry about the data cable).

 

Exactly what I was looking for.

I knew there was the obvious power differences, I was wondering for the sake of £30 is it worth risking any consequential damage tot he laptop as a result of some cheap chinese made power inverter for the LED screen.

Is the lamp unit built into the panel.

 

Yes, the lamp is built into the panel.

I think you mean Inverter not Converter. No CCFL notebook has been successfully converted to LED AFAIK.

Probably not worth it, no.... Besides all the normal voltage stuff, LED backlit LCDs tend to have an entirely different data connector... You'd have to get all new cables and that may not be the end of it if there are multiple motherboard and BIOS revisions. And I only say that it may be possible because I think the 6920g was released with LED sometime.

Definitely not something easy to experiment with BTW... CCFLs run on around 500v... its kind of a painful shock (I would know)

 

I have converted CCFL backlight to LED with a custom made converter by lcdparts.net and I think it's the best upgrade for my fairly old laptop.

 

Thats replacing the actual CCFL backlight of the LCD with a strip of after market LEDs.
While its an awesome thing to do, I think most people would find it pretty difficult. You need to be in a somewhat dust free environment depend on how the LCD is assembled, the prices they charge are not really very good... and it will still never be the same as a true LED backlit LCD, wont even necessarily be brighter.

A much better option for general screen quality is to find a 30 pin cable and a higher resolution better quality LCD which will actually have some decent contrast, colors and viewing angles. None of these you can change with a backlight.