Display panel and discharge type display apparatus having mixture of three gases

A plasma display panel for displaying color images having X electrodes for supplying a sustain pulse and Y electrodes for supplying a scan pulse and a sustain pulse in which said Y electrodes and said X electrodes are arranged alternatively and in parallel with one another, and address electrodes arranged perpendicular to said X and said Y electrodes with a discharge space there between, and enclosing a discharge gas in said discharge spaces for generating ultraviolet rays in a plasma state which is formed by discharging said discharge gas by driving said X electrodes and said Y electrodes after write discharge operations between said Y electrodes and said address electrodes, comprising:

• a visible light generating unit for generating visible light by using said ultraviolet rays;
• wherein said discharge gas is a mixed gas consisting of Xe, He and Ne,
• wherein a mixed ratio of Xe to said discharge gas is set from over 1% to 8% in volume at most (1% in volume<mixed ratio of Xe<8% in volume), and
• wherein a mixed ratio of He to Ne in an He and Ne gas is set from over 8% to 40% in volume at most (8% in volume<mixed ratio of He to Ne in an He and Ne gas<40% in volume) for maintaining an operating margin to be equal to or larger than a predetermined value of a voltage level of the sustain pulse generated between said X electrode and said Y electrode, irrespective of voltage level of the address pulse generated between said address electrode and said Y electrode, thereby suppressing erroneous discharge therebetween.