Self-resonant frequency of the panel component in alternating current plasma display panels

ABSTRACT

The variation of the electrical properties of the panel component of alternating current plasma display panels with varying power frequencies was investigated and the effects of parasitic factors on the panel were studied. The 42-in. panel exhibited capacitive properties up to 400 kHz, showing a self-resonant frequency (f_SR) at approximately 400 kHz, whereas it exhibited inductive properties above 400 kHz. As the panel area decreased, the f_SR of the panel shifted from 400 kHz to 650 kHz. In addition, as the panel diagonal size increased from 32 to 72 in., the f_SR decreased from 500 kHz to 175 kHz. This implies that the panel becomes more sensitive with increasing panel area because the f_SR approached the typical sustain frequency (∼200 kHz). Furthermore, we propose a different energy recovery circuit (ERC) to lower the power consumption in the high-frequency waveform, where the capacitive component in the ERC should be changed to an inductive component when the frequency of the driving waveform is higher than the f_SR.

KEYWORDS:

• AC-PDPs
• parasitic inductance
• plasma display
• self-resonance

Funding

This research work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2013R1A1A4A01008503).