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From: Kryten on 27 Aug 2005 07:31
<gavin.melville(a)acclipse.co.nz> wrote in message
news:1125138935.170242.171990(a)g14g2000cwa.googlegroups.com...

> The reply from Taiwan was a bit of a stunner.

Yeah, what kind of useless product is this?

Even a CRT takes many hours to get burn-in images.

Hard to tell from their English, but I wonder if they mean that a picture
would show up as an after-image if you change to an all-lit image?

Discrete LED brightness varies with temperature (brighter when colder), so
maybe the lit pixels get warmer than the unlit pixels. They would then
appear dimmer when the unlit pixels are turned on, at least until all pixels
warmed to the same temperature.

Plastic isn't as good a heat conductor as glass or inorganic LED material.

> Back to the search for low power display, and don't go near Delta.......

I heard OLED displays are not actually very low power, they are emitting
light energy rather than absorbing it as LCDs do.



From: Spehro Pefhany on 27 Aug 2005 10:34
On Sat, 27 Aug 2005 11:31:25 GMT, the renowned "Kryten"
<kryten_droid_obfusticator(a)ntlworld.com> wrote:

>
>I heard OLED displays are not actually very low power, they are emitting
>light energy rather than absorbing it as LCDs do.
>
They are lower power than an LCD + LED backlight.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff(a)interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
From: Ian Stirling on 27 Aug 2005 14:26
gavin.melville(a)acclipse.co.nz wrote:
> Spehro Pefhany wrote:
>> Thanks for the link. I see what you mean. Life appears to be 5,000
>> hours to 50%, since it's measured with 50% duty cycle. Still looks
>> like it should be hundreds of hours to see a visible difference.
>>
>> Have you talked to the office in Taiwan? (they'll probably refer it
>> back to the dudes in FL, but it can't hurt)
>
> The reply from Taiwan was a bit of a stunner.
>
> "Due to the display uniformity in the display screen , we advise our
> customer that don't hold the same display picture over 1 min.
>

I think this is just generic, and nothing specific to this OLED.
They are not saying that after 61s, there will be damage.
What they are trying to get across is that if you have the display
static for long periods, you'll notice nonuniformity eventually.
From: Spehro Pefhany on 27 Aug 2005 17:28
On 27 Aug 2005 18:26:21 GMT, the renowned Ian Stirling
<root(a)mauve.demon.co.uk> wrote:

>gavin.melville(a)acclipse.co.nz wrote:
>> Spehro Pefhany wrote:
>>> Thanks for the link. I see what you mean. Life appears to be 5,000
>>> hours to 50%, since it's measured with 50% duty cycle. Still looks
>>> like it should be hundreds of hours to see a visible difference.
>>>
>>> Have you talked to the office in Taiwan? (they'll probably refer it
>>> back to the dudes in FL, but it can't hurt)
>>
>> The reply from Taiwan was a bit of a stunner.
>>
>> "Due to the display uniformity in the display screen , we advise our
>> customer that don't hold the same display picture over 1 min.
>>
>
>I think this is just generic, and nothing specific to this OLED.
>They are not saying that after 61s, there will be damage.
>What they are trying to get across is that if you have the display
>static for long periods, you'll notice nonuniformity eventually.

Rather extreme CYA statement, though.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff(a)interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
From: Ian Stirling on 28 Aug 2005 07:47
Spehro Pefhany <speffSNIP(a)interlogdotyou.knowwhat> wrote:
> On 27 Aug 2005 18:26:21 GMT, the renowned Ian Stirling
> <root(a)mauve.demon.co.uk> wrote:
>
>>gavin.melville(a)acclipse.co.nz wrote:
>>> Spehro Pefhany wrote:
>>>> Thanks for the link. I see what you mean. Life appears to be 5,000
>>>> hours to 50%, since it's measured with 50% duty cycle. Still looks
>>>> like it should be hundreds of hours to see a visible difference.
>>>>
>>>> Have you talked to the office in Taiwan? (they'll probably refer it
>>>> back to the dudes in FL, but it can't hurt)
>>>
>>> The reply from Taiwan was a bit of a stunner.
>>>
>>> "Due to the display uniformity in the display screen , we advise our
>>> customer that don't hold the same display picture over 1 min.
>>>
>>
>>I think this is just generic, and nothing specific to this OLED.
>>They are not saying that after 61s, there will be damage.
>>What they are trying to get across is that if you have the display
>>static for long periods, you'll notice nonuniformity eventually.
>
> Rather extreme CYA statement, though.

I think it's possibly a case of the translator not fully understanding the
engineers.

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