Yukika Yamada

P-91: A Study on Discharge Characteristics of Face-to-Face and Coplanar Sustain Electrode Structures in 42-inch Full HD Grade AC PDPs

The discharge characteristics of the face-to-face and coplanar sustain electrode structures in 42″ full-HD grade test panel were investigated. The UV conversion efficiency (plasma efficiency) was calculated by the visible emission of 585 nm from the Ne and infrared emission of 823 and 828 nm from Xe in the two different face-to-face and coplanar 6-inch test panels by using the digital photo meter (PR-920) and the spectrometer (diode array rapid analyzer system). The luminance efficiency of the face-to-face and coplanar sustain electrode structure were measured at a 4 % Xe content and a pressure of 450 Torr, and driving frequencies of 100 kHz with a duty ratio of 40 %, respectively. As a result, the UV conversion efficiency (plasma efficiency) of the face-to-face sustain electrode structure was improved by about 1.64 to 1.84 times than the coplanar structure and the luminance efficiency of the face-to-face structure was improved by about 2.03 times than the coplanar structure in the 42″ full-HD grade AC-PDPs.

13.4: Three-Dimensional Observations of Reset and Address Discharges of Plasma Display Panel

Three-dimensional infrared emission characteristics of a weak discharge in reset period and two different discharge modes in address period were investigated with 3-D test panel. Based on 3-D infrared emissions measured in reset period, the infrared from the cathode were not observed all during the rising and falling ramp reset period and these characteristics are closely related to the electron energy near the cathode. Based on the front and side images of the weak discharge in reset period, the address discharge mode is estimated and experimentally confirmed with the 3-D test panel. In addition, depending upon various driving conditions, two address discharge modes (single-tail and double-tail modes) were observed and discussed.