Abstract: There is provided a plasma display unit including (a) a plasma display panel, (b) a first substrate on which a first drive circuit is fabricated for driving a first electrode, (c) a second substrate on which a second drive circuit is fabricated for driving a second electrode which cooperates with the first electrode to discharge therebetween to display images on the plasma display panel, (d) a third substrate which connects the first and second substrates to each other therethrough, and (e) at least one electronic part comprised of an electrically conductive pattern and formed on the third substrate which electronic part is to be mounted on the first or second substrate.

Abstract: A drive method of a plasma display panel is disclosed by which prescribed luminance is obtained when display load amount is large, and no luminance saturation is generated when the display load amount is small. This is a method of driving a plasma display panel by which luminescence of sub-fields at prescribed gradations is obtained by employing n sustaining pulses, and the time from the start of charge recovery of the sustaining pulses to the fixation of the output line to a sustaining potential and the time to the fixation to the ground potential are made variable.

Abstract: A memory circuit for a display apparatus is required to rewrite a display memory with a clear data as a clear data operation. During the clear data operation, an address counter produces address information for accessing the display memory in response to a clock signal that has a clock rate higher than that a clock signal which is used during a normal operation in which the display memory is rewritten with display data or subject to a data read operation.

Abstract: A method for displaying an image with multilevel brightness by using an image display device in which an image is displayed by sequentially activating scan lines one by one, and one complete display image is formed by at least a plurality of continuous frames or fields. A brightness of the whole of the display screen is changed in units of one frame or field, so that each display pixel can have brightness levels which are respectively defined by combinations of brightness levels given by an input display data and brightness levels of the whole of the display screen.

Abstract: A display apparatus having an X-Y matrix type display panel with data and scanning electrodes has a driving circuit for driving the scanning electrodes which driving circuit is divided into two portions. One portion is for odd-numbered scanning electrodes and another portion is for even-numbered scanning electrodes. By actuating the odd-numbered electrode driving circuit and the even-numbered electrode driving circuit alternately, in a staggered fashion, a conventional single electrode scanning mode is obtained. However, when the odd-numbered electrode driving circuit and the even-numbered electrode driving circuit are simultaneously actuated, a dual electrode scanning mode is obtained. Thus, two diffrent scanning modes can be obtained by providing an appropriate display mode switching signal to the odd-numbered and even-numbered electrode driving circuits.