Liquid-crystal displays are the most common; others are IPS, LED, OLED, and AMOLED displays. The iPhone 11 has a IPS LCD, unlike the Pro models which have OLED displays. LG debuted its webOS on smartTVs and new 77-inch curved OLED Ultra HD TV. An OLED display works without a backlight. The AX100 provides both an EVF (0.39" OLED) and LCD screen (3.5" 0.921 MP). The two options allow for different types of HDR displays such as LCD and OLED. The iPhone X is the first iPhone to use an OLED display. This is also the first LG smartphone to feature an OLED display. Sharp (Foxconn) will invest $570m in pilot line for OLED displays. LG is the leader in the push for OLED Televisions. It was the first iPhone to use an OLED screen. It also produces fluorescent materials for OLED displays. Also, current microLED displays are less efficient than comparable OLED displays. OLED screens are no longer an option. BOE formed a joint venture with Kopin Corporation and Olightek for OLED micro-displays manufacturing.