Just a couple of days back we posted about some high magnification pictures of several display types employed by different manufacturers taken with a microscope to uncover the differences in pixels when it comes to different screen types and today we’re given a look at AMOLED vs. LCD on two Windows Phone 7 devices.
The two devices in the video are the Samsung Omnia 7 and LG Optimus 7, with the first one employing an S-AMOLED screen and the second an LCD screen. What you can clearly see in the video is that, besides the advantages of S-AMOLED screens (like contrast, deep blacks and luminosity) there is also a downside when displaying color gradients. Samsung Omnia 7 seems to exhibit color bleeding when compared to the same image on the LG Optimus 7 mainly because S-AMOLED screens use PenTile display technology with RGBG (Red-Green-Blue-Green) and, while Samsung Omnia 7 S-AMOLED screens should be 24bit in color depth, CIsForCoder reports that it is indeed 16bit and warns developers to avoid images with gradients in their application since those might look good on some devices and bad on others. While this is not the solution, there should definitely be a standardization of either hardware or software (even initial dithering for such images) as Aiden advises developers to run a check on the emulator before releasing the applications in order to verify that no color bleeding will occur.