"@Carol, what display technology is best for reliable operation at -40? We design equipment for northern/arctic operation."
Wow that's pretty cold. I don't know the answer, since most specs say down to -40C. I don't know if the tests just stop there or that they actually fail below -40C. You would probably have to test them yourself. I would guess LEDs are fine. OLEDs might be different . I think the starting is the issue. Once they start they would warm up. Since you are right at the edge of the spec, you could pre-heat if that's really an issue.
OLEDs can degrade with exposure to moisture and oxygen. A high quality barrier material and edge seal is critical. On the other hand, if you are using the display, the heat drives out the moisture and oxygen. This is an ongoing issue in the industry and I believe they can make significant improvemens.
@flared0ne - Hey, that was good. I couldn't figure that one out, but got it. But if they posted the question of how to get here, and they had to be here to post the question, then that's confusing too. I suppose I still don't understand the question.
FYI - I was searching for info last night on ZigBee Light Link, which was discussed yesterday. The ZigBee Alliance has a webinar on it on May 16. There's no DesignNews class that day. www.zigbee.org
LG and samsung each develop their proprietary OLED technologies. They each have many patents and jealously guars them. There are other players too. But these are the two big manufacturers.
OLEDs may have burn in, in that the lifetime of the pixel may degrade and become dimmer. I'm sure it's an issue the manufacturer's are working hard on.
Can OLED displays suffer from a burn problem like CRTs? That is, if some pixels are used all the time, will they start to dim compared to the less frequently used pixels?
@Carol, on some OLED displays we use, we have noticed some type of pixel-burn-in (the display is static and does not change a lot). Is this normal for OLED displays? Thanks...
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