Digitimes reports Apple has started the certification process for components the company will use in the iPad 3, set to be released in 2012. Digitimes says some part markers have already landed certifications such as Radiant Opto-Electronics with LED backlight units, with others rushing to get the deals done in the upcoming months.

Taiwan-based component makers for backlight modules and light bars have received certification from Apple, however, the certification of panels is still in progress, added industry sources.

According to component makers, the timing for the launch of iPad 3 should be in 2012. Taiwan-based firms think iPad 2 will become the mainstream and Apple will lower its price to compete with other tablet PCs.

In the same post and in a separate report, Digitimes also notes Apple will continue using standard LCDs for the next-generation iPad, as opposite to rumors that claimed Apple was considering adopting AMOLED displays from Samsung Electronics. As AMOLED still wouldn’t be able to meet Apple’s demand, Digitimes believes Apple will rely on LCDs again.

Taiwan-based panel makers pointed out that Samsung brand tablet PCs have not all adopted AMOLED panels. Only its Galaxy S II smartphones feature AMOLED panels, hence, it is unlikely for iPad 3 to adopt AMOLED panels. Industry observers indicated that demand for small- to medium-size AMOLED panels has been increasing, therefore, causing a shortage. The production might not catch up with the schedule of Apple’s iPad 3. It is more likely for Apple to adopt AMOLED panels in products after iPad 3.

A series of reports from earlier this year suggested Apple could release two iPads in 2011, but that doesn’t seem to be the case anymore according to recent speculation and claims that the iPad 3 will follow Apple’s usual schedule for the device with a release in Spring 2012.