The invention relates to a process of producing a display panel, the process comprising a step of providing plural display regions on the principal plane of a support substrate, a step of applying an adhesive to the principal plane of the support substrate so as to cover the display region, to form a seal layer and laminating a seal plate through the seal layer to form a laminate and a step of dividing the laminate at the positions between the display adjacent to each other to produce plural light emitting panels each having the display region, the process further comprising a step of forming an adhesion preventive layer that inhibits adhesion to the adhesive on the principal plane of the support substrate between the display regions adjacent to each other prior to the application of the adhesive.