Patent ID: 7170476

Claim:
A method for producing a fixed pattern display panel from a matrix display panel including m driving lines (m is an integer which is equal to or greater than two); n scanning lines (n is an integer which is equal to or greater than two)) intersecting with the m driving lines; and a plurality of pixel portions arranged at intersections of the m driving lines and the n scanning lines, each of the pixel portions having a non-volatile binary memory element and a light-emitting element, wherein, when the memory element holds one of two values, the light-emitting element is in an electrically disconnected state between one of the m driving lines and one of the n scanning lines, and when the memory element holds the other of the two values, the light-emitting element is in an electrically connected state between the one driving line and the one scanning line; the method comprising: a writing step of changing the holding state of each of the memory elements of the plurality of pixels to one or the other of the two values, in accordance with a predetermined fixed pattern; and an electrode producing step of jointly connecting the m driving lines as a first electrode and jointly connecting the n scanning lines as a second electrode.