5.3: Discharge Observation of Plasma Tubes

Abstract

The plasma tube array display presents the wall size display with very high luminous efficacy. Discharging in plasma tube was observed to estimate the structure for high luminous efficacy. From the results of the observation, it is estimated that not only the discharge gap but also the discharge cavity effects to the luminous efficacy. With this result new structure was tries and 3.7 lm/W was achieved as the luminous efficacy.

High-luminous-efficacy structure for plasma tubes

“…When the driving voltage is less than 400 V, for which the same circuit devices of conventional PDPs can be used, the luminous efficacy is 3.7 lm/W. 3 Figure 6 is a re-plotted graph that shows the luminous efficacy as a function of the margin center voltage in static operation. The luminous efficacy is proportional to the sustain gap for both shapes.…”

“…For PDPs, the luminous efficacy is not proportional to the sustain gap as we have reported. 3 Figure 13 shows the schematic of the test cell of a conventional PDP structure that we have reported, 3 and Fig. 14 shows the luminous efficacy with various sustain gaps for this test cell structure.…”

“…However, not only the cell size and the sustain gap, but also other tube design parameters strongly affect the luminous efficacy as we have reported. 3 In this paper, the design of the plasma tube for high luminance efficacy is discussed, and the highluminous test tube is shown.…”

18.3: Dynamic Driving Characteristics of Plasma Tubes Array

“…In SID'03 and IDW'03 we have reported the luminous efficacy of 3.7 lm/W for 25-cm long and 3.1 lm/W for 1-m long plasma tubes respectively [4] [5] . We have investigated the electrical characteristics of the plasma tubes array and found two differences compared with those of conventional PDPs.…”

A light and flexible plasma tube array with a film substrate

“…3 And the highest luminous efficacy of 3.7 lm/W was achieved by using a rectangularly shaped plasma tube. 5,6 However the flexural strength of the rectangularly shaped plasma tube was not high enough, so we finally adopted a cylindrically shaped plasma tube. We have successfully manufactured a 1 × 128 mm test PTA composed of 128 plasma tubes 1 m long.…”