1. Field of the Invention
The present invention relates to a plasma display panel, and more particularly, to a plasma display panel that improves the luminance efficiency by increasing a plasma density by forming a magnetic field within a discharge space.
2. Description of the Related Art
A Plasma Display Panel (PDP) display, which is a flat panel display, has excellent characteristics, namely, displays a high-quality image, is extremely thin and light, and provides a wide viewing angle, while having a large screen. In addition, a PDP display can be more simply manufactured than other flat panel displays and can be easily enlarged, such that the PDP display is spotlighted as a next-generation flat panel display.
In a 3-electrode surface discharge PDP, address electrode lines AR1, AG1, . . . , AGm, and ABm, front and rear dielectric layers, Y electrode lines Y1, . . . , and Yn, X electrode lines X1, . . , and Xn, phosphors, barrier ribs, and a MgO protective layer are disposed between front and rear glass substrates of the 3-electrode surface discharge PDP.
The address electrode lines AR1, AG1, . . . , AGm, and ABm are arranged in a predetermined pattern over the rear glass substrate. The rear dielectric layer is entirely coated over the address electrode lines AR1, AG1, . . . , AGm, and ABm. The barrier ribs are formed on the front surface of the rear dielectric layer to be parallel to the address electrode lines AR1, AG1, . . . , AGm, and ABm. The barrier ribs define discharge areas of each discharge cell and prevent optical crosstalk between adjacent discharge cells. The phosphors 16 are coated between barrier ribs.
The X electrode lines X1, . . . , and Xn and the Y electrode lines Y1, . . , and Yn are patterned on a rear surface of the front glass substrate so as to be orthogonal to the address electrode lines AR1, AG1, . . . , AGm, and ABm. The respective intersections define corresponding discharge cells. The X electrode lines X1, . . . , and Xn and the Y electrode lines Y1, . . . , and Yn are each comprised of a transparent electrode line of a conductive material, such as, Indium Tin Oxide (ITO), and a metal electrode line for increasing conductivity. For example, the X electrode line Xn is comprised of a transparent electrode line Xna and a metal electrode line Xnb, and the Y electrode line Yn is comprised of a transparent electrode line Yna and a metal electrode line Ynb. The front dielectric layer is entirely coated over the X electrode lines X1, . . . , and Xn and the Y electrode lines Y1, . . . , and Yn. The MgO protective layer for protecting the panel against strong electric fields is coated over the entire rear surface of the front dielectric layer. Discharge spaces are sealed with a gas therein for forming a plasma.
In the 3-electrode surface discharge PDP, not only the X electrode lines X1, . . . , and Xn, the Y electrode lines Y1, . . . , and Yn, but also the dielectric layer and the protective layer formed on the X and Y electrode lines exist on the front glass substrate. During discharge, visible rays emitted from the phosphors in the discharge spaces pass through the front substrate. However, the 3-electrode surface discharge PDP has a significant problem in that only about 60% of the visible rays are transmitted by the front substrate because of various components formed on the front substrate.
Also, in the 3-electrode surface discharge PDP, electrodes provoking the discharge are formed over the discharge spaces, namely, on the inner surface of the front substrate 10 through which the visible rays pass, such that the discharge is generated on the inner surface thereof and spreads. Hence, the 3-electrode surface discharge PDP has a low luminance efficiency.
Furthermore, when the 3-electrode surface discharge PDP is used for a long period of time, charged particles of a discharge gas cause ion sputtering on the phosphors due to an electric field, thereby generating a permanent residual image.