Patent ID: 7583027

Claim:
A plasma display apparatus comprising: an upper electrode pair including a scan electrode and a sustain electrode which are formed on an upper substrate; an address electrode formed on a lower substrate opposite to the upper substrate; a barrier rib formed between the upper substrate and the lower substrate; and a dielectric layer which is formed on the upper substrate to cover the upper electrode pair, wherein the dielectric layer comprises: a first layer having a first dielectric constant; and a second layer having a second dielectric constant, wherein the second dielectric constant is different than the first dielectric constant, the first and second layers of the dielectric layer are positioned immediately adjacent to one another, and the first layer is provided on a surface of the upper substrate covering the upper substrate and the upper electrode pair, and the second layer is formed on a portion of the first layer that extends between and in parallel to adjacent barrier ribs such that a thickness of the dielectric layer in an area that overlaps the barrier rib is less than a thickness of the dielectric layer in an area between adjacent barrier ribs.