Abstract: A multicolor organic EL element having a light emitting layer containing at least two organic dyes that can act as light emitting center (luminescence center), wherein at least one of said organic dyes is modified so as to change the colors of the light emitted from the element, and a method for manufacturing the element, and a display using the element.

Abstract: A multicolor organic EL element having a light emitting layer containing at least two organic dyes that can act as light emitting center (luminescence center), wherein at least one of said organic dyes is modified so as to change the colors of the light emitted from the element, and a method for manufacturing the element, and a display using the element.

Abstract: The present invention provides an aminomethylene derivative represented by general formula (I): ##STR1## wherein A is a cyclic oxo group selected from the group consisting of following general formulae (a), (b), (c), (d) and (e): ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each independently represent H, an alkyl group or the like; R.sup.6, R.sup.7 and R.sup.8 each independently represent an alkyl group or the like; R.sup.1 and R.sup.2 or R.sup.7 and R.sup.8 may combine with each other to form a tetramethylene group or the like; R represents an alkyl group optionally containing OH or O; and n is an integer of 0 to 4, a process for the same, and the use thereof. The derivatives have an excellent ultraviolet absorption ability and a high optical stability.