A method and an apparatus for manufacturing an image displaying apparatus having a display panel. A first substrate of the display panel on which a phosphor exciter is disposed and a second substrate of the display panel on which phosphors emitting light by the phosphor exciter is provided, are prepared under a vacuum atmosphere. Then, the first and the second substrates are carried in a getter processing chamber or bake processing chamber, and getter processing or bake processing is applied thereto under the vacuum atmosphere. After the processing, the first and the second substrates are carried in a seal processing chamber, where the substrates are heat sealed under the vacuum atmosphere. Thus, reduction of vacuum exhaust time and a high vacuum degree in manufacturing an image displaying apparatus is attained and efficiency of manufacturing is improved.