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05-02-2005, 07:17 PM
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#16
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MySQL Error
Join Date: May 2003
Location: Miami, FL
Posts: 4,353
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Faq updated
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Sponsored links
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05-02-2005, 10:45 PM
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#17
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Maximum Bitrate
Join Date: Sep 2004
Posts: 637
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Quote: 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....
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05-02-2005, 10:56 PM
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#18
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My Village Called
Join Date: Jul 2004
Location: Berkeley, CA
Posts: 10,763
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Quote: 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?
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05-02-2005, 10:59 PM
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#19
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Maximum Bitrate
Join Date: May 2004
Location: NJ
Posts: 558
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I am in for 7" & 8"
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05-03-2005, 04:50 AM
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#20
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Maximum Bitrate
Join Date: Sep 2004
Posts: 637
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Quote: Originally Posted by 0l33l
Got a link to the $1 1W LEDs?
it is anywhere here in P.R.China but all in chinese
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05-03-2005, 05:16 AM
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#21
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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Quote: 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....
dude. we have looked at all these options - trust me. We have looked at 1,3 and 5W LEDS but they all require cooling or they won't last very long. This cooling is bulky and a lot of people just don't have the room. I for one don't. The 3W LED is the equivalent of 60 normal LEDs but it runs at up to 70 degC and needs a heatsink.
LED backlighting is still not used becasue it is not as straightforward as you think. If you point me to somewhere i can get 1W while LEDS that run cool then please show me as i would love to try them and eliminate the inverters from the solution all together.
__________________
If you want more answers on anything I have posted you can find me at digital-car.co.uk
or skiing or diving or doing somthing else fun!
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05-03-2005, 08:22 AM
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#22
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Variable Bitrate
Join Date: Feb 2005
Posts: 432
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Quote: Originally Posted by jcdillin
Project FAQ
How bright is this going to be?
Well everything right now is a guess, but we are hoping for the 800 to 1000nit range. Untill we get the tubes and test them we really dont know.
Will that brightness be with the touchscreen on?
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05-03-2005, 03:56 PM
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#23
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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Quote: Originally Posted by skippy911
Will that brightness be with the touchscreen on?
doubt it. TS robs 25% of the brightness. Unlessw e canget 300 orders for new ones that will only rob 8%!!
__________________
If you want more answers on anything I have posted you can find me at digital-car.co.uk
or skiing or diving or doing somthing else fun!
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05-03-2005, 04:01 PM
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#24
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FLAC
Join Date: Sep 2004
Posts: 1,556
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25% is an underestimate in my opinion. The specs are around 400 nits without TS and 250/280 with (depending where you read them / which LCD make it is). In my opinion it's probably worse since I find the blurring effect the TS has on the LCD makes it a lot less readable on top of just the washout effect the sun has.
__________________
Progress: 80% - Permanent install left.
Motion LS800 Tablet PC and dock.
Vista, Bu-535 GPS, RoadRunner, MPT2006.
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05-03-2005, 04:10 PM
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#25
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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yeah the 280 is normally knocked around.
Typical specs for a 4 wire resistive overlay is 75% clarity though. (well thats what 'we' in the touchscreen business use anyway  ) Then you have problems with extra glare and the fuzzyness.
__________________
If you want more answers on anything I have posted you can find me at digital-car.co.uk
or skiing or diving or doing somthing else fun!
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05-03-2005, 05:30 PM
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#26
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Raw Wave
Join Date: Oct 2004
Posts: 3,453
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You guys should have a "Project Completion" progress bar or % in the FAQ post
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05-03-2005, 05:34 PM
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#27
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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Quote: Originally Posted by tj!2k4
You guys should have a "Project Completion" progress bar or % in the FAQ post
good idea but ithink it would be depressing!!!
__________________
If you want more answers on anything I have posted you can find me at digital-car.co.uk
or skiing or diving or doing somthing else fun!
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05-03-2005, 05:37 PM
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#28
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Raw Wave
Join Date: Oct 2004
Posts: 3,453
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oh, i don't think so.. the mere fact that you guys are investigating this..... .brightens up my day =)
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05-03-2005, 05:39 PM
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#29
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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hahaha. I am just looking at how to build my LEd backlighting test rig again. i have 100 bright LEDs on the way over from the USA witht he CCFLs. (and yeah it was planned to try it before the above comments about trying LEDS)
__________________
If you want more answers on anything I have posted you can find me at digital-car.co.uk
or skiing or diving or doing somthing else fun!
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05-03-2005, 07:27 PM
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#30
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MySQL Error
Join Date: May 2003
Location: Miami, FL
Posts: 4,353
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faq updated
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