Pure LCD laptop \ tablet wanted...

D

Darren_Ford

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Hi All,

Shot in the dark here but is anyone aware of any laptops or tablets which have a pure LCD (Old LCD screen without the LED backlight).

Now let me explain why...

I have a brother who suffers from a rare eye condition which is worsened by LED screens. (uveitis)
So essentially we are hunting for a device which he is still able to use as he is unaffected by LCD screen technology.

Essentially we cannot afford to be fussy but it would be great if the device is at least a high spec i5.

Thanks in advance...

Any help would be greatly appreciated.

Thanks
 
Bit off topic but also try installing f.lux when you find an lcd laptop for him. The reduction in blue light intensity might be less taxing on his eyes.
 
saor said:
Bit off topic but also try installing f.lux when you find an lcd laptop for him. The reduction in blue light intensity might be less taxing on his eyes.
Click to expand...

Hi there Saor, thanks for the update, he is currently using that it does help a lot :)
 
Unless he needs to be mobile, look for second-hand monitors. There are still many offers with CCFL backlit. With external monitor, increased distance can be less fatiguing too.

LED backlit is not a problem itself. It is a pulse-with modulation (PWM) which cause fatigue. Manufacturers use PWM, as reducing intensity do not shift colours. They could use constant current (CC) drivers, but compensating colour deviation adds cost and complication. I think I visited website giving information which monitors use CC LED drivers.

The in-house solution is to reduce maximum voltage powering LED's and in the same time block PWM on the LED controller, giving full output. Colour shift can be roughly compensated in the monitor menu.
 
sajunky said:
Unless he needs to be mobile, look for second-hand monitors. There are still many offers with CCFL backlit. With external monitor, increased distance can be less fatiguing too.

LED backlit is not a problem itself. It is a pulse-with modulation (PWM) which cause fatigue. Manufacturers use PWM, as reducing intensity do not shift colours. They could use constant current (CC) drivers, but compensating colour deviation adds cost and complication. I think I visited website giving information which monitors use CC LED drivers.

The in-house solution is to reduce maximum voltage powering LED's and in the same time block PWM on the LED controller, giving full output. Colour shift can be roughly compensated in the monitor menu.
Click to expand...

Hi there thanks for the reply, he has an LCD TV and monitor at home already, this is purely for mobility
 
What exactly is the problem, is it the bright colours? Won't it help to invert colours so that white writing is on a black backround?
 
bigboy529 said:
What exactly is the problem, is it the bright colours? Won't it help to invert colours so that white writing is on a black backround?
Click to expand...

Hi there it is a known issue with Uveitis, it causes a swelling in the eyes and essentially accelerates the speed at which he loses his sight.
 
Darren_Ford said:
Hi there it is a known issue with Uveitis, it causes a swelling in the eyes and essentially accelerates the speed at which he loses his sight.
Click to expand...



I quickly read up a bit on the condition, looks like light sinsitivity is one of the main simptoms. I'd say he should definatly invert the colours on his computer so that everything is white on black, obviously movies, games etc will be quite awkward, but by the sound of it he shouldn't be playing games or watching movies anyway. Windows can invert colours up to a point, for anything further than that you can look at software called Zoomtext, it also offers zooming and some speach for when a person starts losing their eye site or for reading long documents, the software is quite expensive but works great.
 
This trick can be used on every laptop to reduce flicker:
1. Turn on full hardware brightess (Fn key plus something).
2. Go to advanced display options (the place you can calibrate colours, gamma). There should be an option for brightness. Reduce brightness to suit your needs.
 
bigboy529 said:
I quickly read up a bit on the condition, looks like light sinsitivity is one of the main simptoms. I'd say he should definatly invert the colours on his computer so that everything is white on black, obviously movies, games etc will be quite awkward, but by the sound of it he shouldn't be playing games or watching movies anyway. Windows can invert colours up to a point, for anything further than that you can look at software called Zoomtext, it also offers zooming and some speach for when a person starts losing their eye site or for reading long documents, the software is quite expensive but works great.
Click to expand...


Thanks for this, I have forwarded it onto him
 
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