ED 2 PDP Plasma Panel Display CCFL Principle

ED 2. PDP [Plasma Panel Display] **CCFL Principle of PDP 1. Applying voltage to electrodes 2. Argon & Mercury gas plasma 3. Emits ultraviolet light [UV in CCFL] 4. UV excites phosphors [PL] 5. Emit visible light [ depends on Eg] What is Plasma? The ionized state of the gas [high temp]. When energy applies to gas èmany ions & negative electrons are generated and gathered. [~0. 01% ] èhave electrically neutral è Flow electricity * Ex: Aurora, Fluorescent lamp, PDP ** PL : photolumonescence [by light(photon)] PUSAN NATIONAL UNIVERSITY

ED 2. PDP [Plasma Panel Display] Visible Emission Front Glass Transparent dielectric layer : To limit the amount of voltage & forming wall's voltage ITO (X, Y electrodes) : to protect plasma Phosphor : Change UV to visible light Address electrode : flow electric current to form plasma at desired pixel Mg. O : to protect transparent dielectric Bus electrode : to flow main electrode's electric current well Dielectric layer: to protect address electrode Barrier: to prevent each cell from disturbing PUSAN NATIONAL UNIVERSITY

ED 2. PDP [Plasma Panel Display] Role of each part 1 PUSAN NATIONAL UNIVERSITY

ED 2. PDP [Plasma Panel Display] Role of each part 2 PUSAN NATIONAL UNIVERSITY