Sony has a new OLED-based microdisplay, the ECX339A, that has 1600 x 1200 resolution and a 0.5″ diagonal, giving a pixel pitch of 6.3μm (which we calculate at just over 4,000 ppi). Previously, the company had a maximum resolution of 1280 x 960 in this side of microdisplay and the new device is said to have the same level of power consumption which is 310 mW @ 60 fps (progressive) / 120 fps (dual-line progressive) at 200 cd/m² of brightness. Peak brightness is 1,000 cd/m² and contrast is 100,000:1. Colour gamut coverage is 110% of sRGB.
Frame rate has also been doubled from 120Hz to 240Hz. Samples are already available and mass production is planned for November 2018, with samples priced at ¥50,000 ($459).
Sony said that it has revised the transistor design to avoid reduced performance with the smaller transistors. It also said that it has put the colour filter directly on the silicon substrate, improving the viewing angle performance by minimising parallax errors. The firm believes that the display will be used in high end cameras.
Measures to secure viewing angle even with smaller pixel pitch New product (UXGA, left) and previous product (QVGA, right)
The pixels are claimed to be the smallest in the world.
Comparison of images on OLED Microdisplays New product (UXGA, left) and previous product (QVGA, right)
