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05-04-2005, 12:00 AM
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#31
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Maximum Bitrate
Join Date: Sep 2004
Posts: 637
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Quote: Originally Posted by Scouse Monkey
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.
The LEDs MUST be drived by PWM controler IC (eg. MAX ICs) in order to cooldown, you can not light them by DC, that is the key point.
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05-04-2005, 01:30 AM
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#32
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Maximum Bitrate
Join Date: May 2003
Location: SE Michigan
Posts: 810
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Quote: Originally Posted by dragonBTV
her is the web address of the company
http://www.superbright.cn
I do NOT recomand anyone to buy their expansive models
and here comes the details
(sorry, the doc of their offer is too large to attach 680K after zip)
DragonBTV has emailed me the doc that he posted about. I'd be happy to host it, except it's in Chinese. I may be wrong here, but I don't think it will be useful to the Brits and Yanks that seem to be interested/working on this project. Correct me if I am wrong.
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05-04-2005, 02:15 AM
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#33
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Variable Bitrate
Join Date: Jun 2004
Location: Buena Park, CA
Posts: 326
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the superbright site has the option of English also........
__________________
Carputer currently 'ghettoed' into car!!!
EPIA MII-12000
Ampie Case with rigged extra USB
Hitachi 60GB
Holux GPS mouse with iGuidance 2.0
Lilliput 7" touchscreen
Netgear WG121 USB WiFi
Carnetix P1260
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05-04-2005, 02:18 AM
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#34
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Maximum Bitrate
Join Date: May 2003
Location: SE Michigan
Posts: 810
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Yep, but the doc that he emailed me does not.
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05-04-2005, 05:00 AM
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#35
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Maximum Bitrate
Join Date: Sep 2004
Posts: 637
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Quote: Originally Posted by eCar™
Yep, but the doc that he emailed me does not.
tables and data in english, that will be enough
all others are talking about how difficult their works....
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05-04-2005, 05:40 AM
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#36
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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 LEDs MUST be drived by PWM controler IC (eg. MAX ICs) in order to cooldown, you can not light them by DC, that is the key point.
i know 
__________________
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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05-04-2005, 05:41 AM
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#37
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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oh, and i can get the document translated at work.
__________________
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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05-04-2005, 05:59 AM
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#38
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Maximum Bitrate
Join Date: May 2003
Location: SE Michigan
Posts: 810
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05-04-2005, 06:27 AM
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#39
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Low Bitrate
Join Date: Oct 2004
Posts: 90
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Thanks for the updates guys, and moving it to a thread that doesn't have 800 posts...yet.  A couple more weeks and the fun starts!
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05-04-2005, 07:12 AM
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#40
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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I am confused now. Should i post new development ideas here or int he other thread and keep this for info.
Anyway....DragonBTV, thanks for that link to superbright, it a vary good site. It is a bit slow and i am in work so i will look later.
i had a quick look at their screens and they upgrade current LCDs such as this one... http://sharp-world.com/products/devi..._LCY00030A.pdf
This is a 6.4" sharp panel - simialar to my new sharp TFT. It has a min contrast ratio of 100 (mine is 60) and they have it up to 1000nit using what looks like a CCFL upgrade. See here: http://www.superbright.cn/EN/products.asp
This place would be perfect to source high brightness LCDs or backlight parts from.
JCD, they also do inverters that could possibly power our CCFLs. They do inverters for 2 to 18 CCFLs! This place must be simply putting new CCFLs in and replacing the diffusers etc to boost contrast. Have you contacted that place I found the other day? I will contact them tonight and try and get some samples of their films.
Dragon, is ther any chance you could dig around and find out exactly what measures they are taking to boost the brightness as they are using LCD panle very similar to ours. Cheers.
__________________
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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05-04-2005, 08:21 AM
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#41
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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this usperbright place rocks. check this out: WD1204 Series
4CCFL Inverter，supporting PWM，optional for auto-temperature /auto-brightness control.
I feel a 4 tube redsign coming on....
The temperature control is useful for guys in cold places as it warms the screen up by increasing the current.
__________________
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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05-04-2005, 01:40 PM
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#42
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MySQL Error
Join Date: May 2003
Location: Miami, FL
Posts: 4,353
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Well we can do it either way, I can just put all the info we find into the faq at the top of the thread or just continue discussion in the other thread.
I havent had time to contact the company about that stuff
but thats what I was saying earlier, they were taking a standard LCD and just bumping it up.
dammit no one listens to me!!!!
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05-04-2005, 02:26 PM
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#43
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MySQL Error
Join Date: Mar 2004
Location: Bristol
Posts: 13,521
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Quote: Originally Posted by jcdillin
dammit no one listens to me!!!!
I listen to you honey.  but if we are going for 1000+nit (what they call medium bright!!!!) we may need new fims to boost the contrast.
__________________
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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05-04-2005, 04:02 PM
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#44
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MySQL Error
Join Date: May 2003
Location: Miami, FL
Posts: 4,353
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Yeah I think we are going to need new films as well, I have a 17" lcd that the controller is fried on i'm going to take the film out of to test with.
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05-04-2005, 04:14 PM
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#45
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Jesus Freak
Join Date: Jan 2004
Location: California
Posts: 4,277
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glad to see you guys are working on this. Keep the progress rolling.
__________________
-Jesus- King of Kings Lord of Lords
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