Victor Develops 8K4K Display Device

May 7, 2008 19:23 Yousuke Ogasawara, Nikkei Electronics

Victor Company of Japan Ltd developed a 1.75-inch (44mm diagonal) micro display called "1.75-inch 8K4K D-ILA Device," which can display 8192 x 4320 (about 35 million) pixels.

The name "D-ILA" refers to "Direct-Drive Image Light Amplifier," which is a display device for use in projectors. The D-ILA can display images with 7680 x 4320 resolution, which is defined as "Super Hi-Vision" by the ITU-R BT.1769 and SMPTE 2036 standards, with only a single device.

The pixel pitch is 4.8μm. Victor achieved an aperture ratio of 90% or higher by reducing the pixel gap to 0.24μm. With the adoption of a technology to reduce disorder caused by improper liquid crystal orientation, the company reduced scattering and diffraction of light at the reflection surface, thereby increasing the contrast ratio to 20,000:1.

The response time (tr + tf) is 4.5ms. The company reportedly optimized the internal driver design and employed a new package structure developed to handle the increased number of drive signal line inputs.

The resolution of the entire device, 8192 x 4320, is about 17 times higher than the HDTV resolution with 1920 x 1080 pixels, which is commonly referred to as "Full High-Definition." The resolution of Super Hi-Vision, 7680 x 4320, is 16 times higher than Full HD. In the latest product, 7680 x 4320 pixels correspond to a diagonal size of 42mm (1.67 inches).

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