Plasma display apparatus

Abstract

A plasma display apparatus is provided. The waveform of a set up signal applied in a reset period rises in at least two steps and first and second switches provided for applying the set up signal are simultaneously turned on. Therefore, it is possible to prevent strong discharge from being generated in the reset period and to thus improve picture quality.

Description

technical field [0001] The present invention relates to a plasma display device, and more particularly, to a plasma display device capable of controlling the switching time point at which at least one ramp switch for applying a ramp-up signal in a reset period is turned on, so as to stably apply up signal. Background technique [0002] In a plasma display device, a discharge cell is formed between a lower substrate on which barrier ribs are formed and an upper substrate facing the lower substrate, and a vacuum generated when an inert gas in the discharge cell is discharged by a high-frequency voltage Ultraviolet light (VUV) collides with the phosphor to generate light to display images. [0003] A plurality of address electrodes X are formed on the lower substrate, and a plurality of scan electrodes Y and sustain electrodes Z crossing the address electrodes X are formed on the upper substrate. [0004] The plasma display device is time-divisionally driven so that one frame...

AI Technical Summary

Problems solved by technology

However, at a time point when the voltage of the up signal R_up increases again, since a voltage not smaller than the minimum operating voltage of the scan IC is applied in a state where the scan electrodes maintain a predetermined voltage level, as indicated in bold, The voltage of the scan electrode Y increases rapidly, resulting in an undesired strong discharge in the reset period R, and a bright spot is displayed

Images