The dependence of the thermal characteristics variation and image sticking phenomenon of PDP on the dielectric loss

The discharge condition of Plasma Display Panel (PDP) changes as the operating time increases. Imaginary part of permittivity of dielectric material which is related to the dielectric loss has been often neglected because of the relatively small values compare to that of the real part. However we have found that some aspect of the long term behavior of PDP is closely related to the dielectric losses. We have studied and compared the thermal characteristics variation and temporal image sticking phenomenon of PDP with two different kinds of dielectrics and correlated with the dielectric losses.

► Lower permittivity dielectric is considered to luminous efficacy improvement.
► Dielectric loss that relate to long term behavior changes with permittivity and time.
► Low permittivity shows lower loss initially but it deteriorates faster as using time.
► Thermal property of PDPs are changed and correlated with progressive deterioration.
► The image sticking of low permittivity is milder initially, deteriorates faster.