LCM flicker
Andy Green
andy at openmoko.com
Mon Mar 10 11:43:40 CET 2008
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Somebody in the thread at some point said:
> Somebody in the thread at some point said:
>> Somebody in the thread at some point said:
>>> Am Mo 10. März 2008 schrieb Andy Green:
>>>> The structure seems to be that the 5:6:5 goes through individual gamma
>>>> tables in the Glamo and that is where the extra LSB is picked up. I'll
>>>> start looking there.
>>> Now it's pretty clear: this is no bug, this is a *feature* of glamo, doing
>>> time division dithering aka PWM to get 64 colors out of 5 bits.
>>> SCNR. lol
>> Wah... surely not... although it fits the situation frighteningly well...
>
> p112 Glamo 3362 Datasheet V1.0-Full-FIC.pdf (sent copy to Joerg)
>
> '' Dithering
The LCM has private local gamma correction as well, but it doesn't seem
to make a difference to the flicker.
Again if anyone is interested to look themselves, the nice people at
beck also have a non-NDA copy of the data available, it is for a
slightly different panel but the ASIC seems to be the same as is the
register set as far as I can see:
wget -O /tmp/lcm-soft.pdf
"http://www.beck-oled-lcd-tft-display.de/display-datenblatt/typ/tpo/TD035SHED1
Product Specification Ver 0.0-112906.pdf"
That's all the data we have to work with.
- -Andy
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