Abstract:
A plasma display panel having a luminous efficiency improved while suppressing an increase of the discharge start voltage and small power consumption. The plasma display panel (1) has a front panel (10), a back panel (20), and a discharge space (30) interposed between the panels. On the surface of the front panel facing the space, a scan electrode (102) and a sustain electrode (103) are arranged with a spacing between them. A dielectric layer (104) and a protective layer (105) are so provided as to cover these electrodes and the surface. Between the scan and sustain electrodes, a recessed portion (10a) is provided in the surface. The bottom (10b) of the recessed portion is positioned nearer to the front of the plasma display panel (1) than the surfaces of the scan and sustain electrodes facing the discharge space.
Abstract:
A plasma display panel having a dielectric protecting layer (14) comprised of MgO and respective phosphor layers (25R, 25G and 25B) for red, green and blue, wherein all the phosphor layers are free of a IV Group element, a transition metal, an alkali metal or an alkaline earth metal, or wherein all the phosphor layers contain a specific amount of a IV Group element, a transition metal, an alkali metal or an alkaline earth metal. The plasma display panel is suppressed in the variation with time of the impedance of the dielectric protecting layer (14) or is capable of allowing the phosphor layers to match up with one another in respect of the direction of the variation, which results in the suppression of the occurrence of black noise.
Abstract:
A plasma display panel wherein a first substrate (11) provided with a protective layer (15) is so arranged as to face a second substrate with a discharge space therebetween and the peripheries of the two substrates are sealed and bonded together is disclosed. A surface of the protective layer (15) includes a first material and a second material having different electron emission characteristics. The first material and the second material are exposed to the discharge space, and at least one of the first and second materials exists in a dispersed state. The first material and the second material may respectively be a first crystal (15A) and a second crystal (15B), and the surface of the protective layer may be composed of the first crystal in which the second crystal is dispersed.
Abstract:
A measuring device, a measuring method, and an evaluating device for easily and adequately obtaining information suitable to evaluate, for example, the discharge characteristic of an insulating film such as an MgO protective layer of a plasma display are provided. An MgO film surface, a sample to be measured, is irradiated with electrons or ions emitted from an electron gun (130) or an ion gun (140). The energy distribution of the secondary electrons emitted from the sample is measured by an electron spectrograph (150), and the spectrum data on the measured secondary electrons is supplied to an analyzing device (200). The analyzing device (200) analyzes the spectrum data and determines information (evaluation value) to evaluate the properties of the sample to be measured.