Thread: LCD Backlight Upgrade

I'll host the file if you want.

Originally Posted by dragonBTV

be careful, it will not be as easy as you wished

I have done a lot for this kind of upgrade before and do not get satisfried result

1.TFT lcd is not a kind of film like panel which you can add as more light as you like, at the same time to strong the back-light, you have to do some on TFT drive timing, otherwise, the result would be too "white" and acting as a lamp....

2.the heat should be lead away from LCD as fast as possible, otherwise you would find out the yellow "shape" after 10 or more hours...

3.according to my reserch, "side mount" would be better then "back mount" , and please do not expect brighter than 800

4.a Chinese company have done a lot on this field, the result is very expensive model. I will post all their documents


sorry for my english and good luck!

Thats all very well but if we don't try we don't get anything!

But...i know of a Uni research project were they have dome something similar to what we want to do and they have made fighter cockpit brighness (well over 1000nit) screens! And that was a 4th year uni project (ie quite basic project with minimal resources and I came up with the same design issues and solutions they came with after 6 months of work in a couple of hours).

Heat willbe an issue and it is one we are not taking lightley. Even LED systems can get hot. I would love to use LEDs but I know how many we would need and the diffusers would be expensive. CCFLs are much easier and cheaper.

Are you planning on sticking w/ 7" LCDs or would this project be applicable for 8" screens as well?

well if the project works, i'll be happy to redesign it for the 8"

Faq updated

Originally Posted by Scouse Monkey

Thats all very well but if we don't try we don't get anything!

But...i know of a Uni research project were they have dome something similar to what we want to do and they have made fighter cockpit brighness (well over 1000nit) screens! And that was a 4th year uni project (ie quite basic project with minimal resources and I came up with the same design issues and solutions they came with after 6 months of work in a couple of hours).

Heat willbe an issue and it is one we are not taking lightley. Even LED systems can get hot. I would love to use LEDs but I know how many we would need and the diffusers would be expensive. CCFLs are much easier and cheaper.

the LED is checper and easy to build for side mount project
the 1W white LED costs $1 and you can simplly add 20 of them with Liliputs Hitachi LCD....

Originally Posted by dragonBTV

the LED is checper and easy to build for side mount project
the 1W white LED costs $1 and you can simplly add 20 of them with Liliputs Hitachi LCD....

Got a link to the $1 1W LEDs?

I am in for 7" & 8"

Originally Posted by 0l33l

Got a link to the $1 1W LEDs?

it is anywhere here in P.R.China but all in chinese