The article is a bit misleading. iPhone already uses LTPS which arguably is better than IGZO but too expensive. It'll be the iPad line up that'll really better off by using IGZO, and the biggest benefit from from the reduced power usage, not the thinner panel. I can't wait to see a iPad mini display with a IGZO panel.
Also the article at least gives an hint that Sharp owns IGZO, they don't. IGZO is owned by a different Japanese company and AFAIK both Samsung and LG have licensed them separately from that company.
But that's only if you deeply care about black level in dark environments. In normal usage, LCD's black level is sufficient enough because there's always light leaking onto your device. Then we have life span (hello burn-in), color accuracy, power consumption, cost, manufacturing, etc, all are currently in favor of IPS. OLED has a great mesmerizing look due to its black level and has wonderfully short response time, but I wouldn't call it superior to IPS yet. For mobile I'll still pick IPS everytime but AMOLED still makes for great marketing for some.
Also the article at least gives an hint that Sharp owns IGZO, they don't. IGZO is owned by a different Japanese company and AFAIK both Samsung and LG have licensed them separately from that company.
IPS will never be superior to OLED because the black level cannot be reached due to the inherent backlight feature of IPS technology.
But that's only if you deeply care about black level in dark environments. In normal usage, LCD's black level is sufficient enough because there's always light leaking onto your device. Then we have life span (hello burn-in), color accuracy, power consumption, cost, manufacturing, etc, all are currently in favor of IPS. OLED has a great mesmerizing look due to its black level and has wonderfully short response time, but I wouldn't call it superior to IPS yet. For mobile I'll still pick IPS everytime but AMOLED still makes for great marketing for some.