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New driving method for gray scale expression in AC plasma display panel

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2 Author(s)
Jeong Hyun Seo ; Dept. of Electron. Eng., Incheon Univ., South Korea ; Lee, Seok Hyun

In this paper, a new gray scale expression method that divides scan lines into multiple blocks is suggested. The proposed method can drive 16 sub-fields per 1 TV field in the panel with XGA (1366×768) resolution. Because reset pulse is applied every 2 sub-fields, both the contrast ratio and the dynamic voltage margin are sufficiently obtained in comparison with previous AWD (address while display) methods. In realizing 16 subfields, shortening the scan time in the erase address period was important. The X bias voltage in the erase address period affected the minimum address voltage but did not the delay time of address discharge. The delay time of address discharge was affected by the address voltage and the time interval between the last sustain discharge and the scanning time. We also evaluated the dynamic false contour. The new method shows an improved image quality in horizontal moving, but discontinuous lines were observed at the boundaries of each block in vertical moving.

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Consumer Electronics, IEEE Transactions on  (Volume:50 ,  Issue: 2 )