Yosuke Yamazaki

A light and flexible plasma tube array with a film substrate

— The plasma tube array is expected to lead to the realization of wall-sized displays. This method will realize an emissive-type display with a flexible screen and an expandable screen size. We have investigated a plastic film substrate with display electrodes for use as a flexible screen and successfully developed the worlds largest bendable emissive display (1000 × 128 mm). The operating voltage distribution was improved compared to that with a plate substrate, and a sufficient voltage margin was maintained.

18.3: Dynamic Driving Characteristics of Plasma Tubes Array

The plasma tubes array is expected to realize the wall size display. However, as a reflection of our tube designing policy for high luminous efficacy, the basic electrical characteristics of plasma tubes array are different from those of conventional PDPs. Some new driving technologies were developed to make the dynamic driving sequence for conventional PDPs adoptable for this high efficacy plasma tubes array. With these results, a full-colour 1m by 128 mm tubes array composed of 128 plasma tubes with the luminous efficacy of 3.1 lm/W was developed.

High-luminance 1-m-long plasma tubes for wall displays

The plasma-tube array is expected to realize a wall-sized display. This method will realize an emissive-type display with a flexible screen shape and an expandable screen size. The shape of the plasma tube was investigated to realize high luminance, high luminance efficacy, and high flexural strength. As the result, a cyl indroid tube is proposed to satisfy these demands. An experimental display of 1 m x 128 mm has been developed with these cylindroid tubes and it demonstrated a high luminous efficacy of 3.1 lm/W.