Fujitsu Hitachi Plasma Display Limited

Hitachi, Ltd.

Shunji Oota

Shinsuke Tanaka

Ayahito Kojima

Masanori Takeuchi

Yasuji Noguchi

Yutaka Chiaki

A driving method for a plasma display apparatus having address electrodes, scan electrodes and common electrodes and displaying one field of image by using subfields is provided. The driving method includes one specific subfield is arranged to be turned ON early in the one field and always turned ON at luminance level higher than input luminance level '0', and the specific subfield has a least luminance weight and does not have resetting.

Display apparatus and display driving method for enhancing grayscale display capable of low luminance portion without increasing driving time

A display apparatus driving method for a field time division type display apparatus displays grayscale by combining a plurality of subfields into which one field has been divided. Each subfield includes a resetting, an addressing, and a sustaining. At least one extra subfield is additionally provided which does not have a resetting, and which stays always ON with a luminance level higher than a prescribed input luminance level.

A plasma display apparatus, in which the display quality of a dark image is improved and which uses a subfield method, has been disclosed. The plasma display apparatus comprises a plasma display panel, a sustain pulse cycle changing means for detecting the display load ratio of each subfield and changing the sustain pulse cycle of each subfield according to the display load ratio, and an adaptive subfield number changing means for calculating a vacant time in a display frame generated by changing the sustain pulse cycle, judging whether a subfield can be added according to the vacant time, and determining the number of subfields in the display frame.

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Kawasaki, Japan

Shunji Oota