Plasma display device
A plasma display which can reduce the cost of a heat dissipating structure for a driver IC. A magnesium oxide layer is formed on a surface in contact with a discharge space in each of display cells of a PDP. The magnesium oxide film includes magnesium oxide crystals which are excited by electron beams irradiated thereto to emit cathode luminescence light having a peak in a wavelength range of 200 to 300 nm. Further, a pixel data pulse generator circuit for applying column electrodes with pixel data pulses in accordance with pixel data is divided into and built in a plurality of IC chips. Each of these IC chips is mounted on one of a plurality of flexible wiring boards which are connected to the power supply line and column electrodes, respectively.
1. A plasma display device for driving, in accordance with pixel data based on an input video signal on a pixel-by-pixel basis, a plasma display panel formed with a capacitive display cell constituting a pixel at each of intersections of a plurality of row electrode pairs with a plurality of column electrodes intersecting with each of said row electrode pairs and extending in the intersecting direction, said device comprising:
a magnesium oxide layer formed on a surface in contact with a discharge space in each of said display cells and including a magnesium oxide crystal exposed to said discharge space, said magnesium oxide crystal having a characteristic to emit cathode luminescence light having a peak in a wavelength range of 200 to 300 nm when excited by an electron beam irradiation; and
a pixel data pulse generator circuit for connecting said column electrodes to a power supply line in accordance with the pixel data to generate a pixel data pulse, and applying the pixel data pulse to said column electrodes,
wherein said pixel data pulse generator circuit comprises a plurality of IC chip circuits, and
each of said IC chip circuits is mounted on one of a plurality of flexible wiring boards connected to the power supply line and said column electrodes.
2. A plasma display device according to claim 1 , further comprising a resonance pulse power supply circuit formed on a circuit board disposed on the back of said plasma display panel for generating a resonance pulse supply voltage, the potential of which varies over a predetermined resonance amplitude, and applying the resonance pulse supply voltage to said power supply line.
3. A plasma display device according to claim 1 , wherein said magnesium oxide crystals have a grain diameter of 2000 angstrom or more.
4. A plasma display device according to claim 1 , wherein said magnesium oxide crystals include magnesium oxide single crystals generated by heating magnesium to generate a magnesium vapor, and oxidizing the magnesium vapor in vapor phase.
5. A plasma display device according to claim 1 , wherein said magnesium oxide crystals emit cathode luminescence light having a peak in a wavelength range of 230 to 250 nm.
6. A plasma display device according to claim 1 , wherein said magnesium oxide layer is formed on a dielectric layer which covers said row electrode pairs.