The front protective glass of the Panasonic TH-65PHD8UK plasma display panel incorporates a Deep Black Filter that suppresses light transmittance and slashes the amount of external light reflected. This technology helps these displays achieve the industry's highest contrast ratio of 340:1 when viewed in bright surroundings. Panasonic TH-37PHD8UK plasma display panels feature a bounded cell structure in which wall-like ribs are used to wrap each individual cell. By increasing the area in which the phosphor can be applied, this dramatically improves both light-emitting efficiency and intensity. Furthermore, by optimizing the gas composition ratio, lighting efficiency has been increased by about 15%. The result is the industry's highest level of brightness. You see crisp and clear images even in bright rooms.