Abstract: A solar cell module includes: a first optical system which concentrates sunlight; a power generation element which performs photoelectric conversion; a glass plate which supports the power generation element; and a second optical system which is on a light-exiting side of the first optical system and supports the glass plate. The second optical system includes a positioning portion, and a second lens on the first optical system side, and the glass plate is disposed at the positioning portion to position the power generation element at a focal point of the second lens.

Abstract: A solar cell module includes: a first optical system which concentrates sunlight; a power generation element which performs photoelectric conversion; a glass plate which supports the power generation element; and a second optical system which is on a light-exiting side of the first optical system and supports the glass plate. The second optical system includes a positioning portion, and a second lens on the first optical system side, and the glass plate is disposed at the positioning portion to position the power generation element at a focal point of the second lens.

Abstract: In a plasma display panel, a protective layer of a front plate is formed of a base protective layer and a particle layer. The base protective layer is a thin film of metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. The particle layer is formed in a manner that single-crystal particles of magnesium oxide having a peak of emission intensity at 200-300 nm two times or higher than another peak of emission intensity at 300-550 nm in the emission spectrum in cathode luminescence emission are stuck on the base protective layer. A panel driving circuit drives the plasma display panel with a subfield structure in which subfields are temporally disposed so that a magnitude of luminance weight has a monotonous decrease from a subfield where an all-cell initializing operation is performed to a subfield where a next all-cell initializing operation is performed.

Abstract: A plasma display device has a crystal particle made of MgO single crystal where the cathode luminescence emission spectrum exhibits a desired characteristic, and displays an image by a driving method in the initializing period. The initializing period has the first half for applying the voltage, which gradually increases from a first voltage and to a second voltage, to a second electrode, and the latter half for applying the voltage, which gradually decreases from a third voltage and to a fourth voltage.

Abstract: The present invention improves discharge characteristics of a protective layer in order to provide a PDP that exhibits excellent display performance even if the PDP is of a fine-cell structure. The present invention also provides a manufacturing method for the PDP. In particular, a protective layer 8 is composed of an MgO film layer 81 and an MgO particle layer 82 that is made of MgO particles 16. The MgO particles 16 are formed by burning an MgO precursor and satisfy that a/b?1.2, where a denotes a spectrum integral value in a wavelength region of a CL spectrum from 650 nm to 900 nm, exclusive of 900 nm, and b denotes a spectrum integral value in a wavelength region of the CL spectrum from 300 nm to 550 nm, exclusive of 550 nm.

Abstract: “Discharge delay” and “dependence of discharge delay on temperatures” are solved by improving a protective layer, thus a PDP can be driven at a low voltage. Furthermore, the PDP can display excellent images by suppressing “dependence of discharge delay on space charges.” Liquid-phase magnesium alkoxide (Mg(OR)2) or acetylacetone magnesium ate whose purity is 99.95% or more is prepared, and is hydrolyzed by adding a small amount of acids to the solution. Thus, a gel of magnesium hydroxide that is a magnesium oxide precursor is formed. Burning the gel in atmosphere at 700° C. or more produces powder containing MgO particles 16a-16d having the NaCl crystal structure with (100) and (111) crystal faces or with (100), (110) and (111) crystal faces. By pasting the powder on a dielectric layer 7 or a surface layer 8, the MgO powder 16 is formed so as to serve as the protective layer.

Abstract: “Discharge delay” and “dependence of discharge delay on temperatures” are solved by improving a protective layer, thus a PDP can be driven at a low voltage. Furthermore, the PDP can display excellent images by suppressing “dependence of discharge delay on space charges.” Liquid-phase magnesium alkoxide (Mg(OR)2) or acetylacetone magnesium ate whose purity is 99.95% or more is prepared, and is hydrolyzed by adding a small amount of acids to the solution. Thus, a gel of magnesium hydroxide that is a magnesium oxide precursor is formed. Burning the gel in atmosphere at 700° C. or more produces powder containing MgO particles 16a-16d having the NaCl crystal structure with (100) and (111) crystal faces or with (100), (110) and (111) crystal faces. By pasting the powder on a dielectric layer 7 or a surface layer 8, the MgO powder 16 is formed so as to serve as the protective layer.

Abstract: A PDP can be driven at low voltage while having a charge retention property in a protection layer, and has favorable image display properties. Additionally, the PDP prevents the occurrence of discharge delay and realizes high-quality image display by performing favorable high-speed driving in a high definition PDP. To achieve this, a surface layer (8) is formed to a film thickness of 1 ?m in an oxygen atmosphere having an oxygen partial pressure of 0.025 Pa or more, the surface layer (8) is provided on a face of a dielectric layer (7) on a discharge space side. Furthermore, MgO particles (16) are dispersed on a surface of the surface layer (8). The surface layer (8) has the effects of protecting the dielectric layer (7) from ion bombardment during discharge, reducing the firing voltage, and preventing excessive electron loss. Also, the MgO particles (16) have a high initial electron emission property.

Abstract: The present invention improves discharge characteristics of a protective layer in order to provide a PDP that exhibits excellent display performance even if the PDP is of a fine-cell structure. The present invention also provides a manufacturing method for the PDP. In particular, a protective layer 8 is composed of an MgO film layer 81 and an MgO particle layer 82 that is made of MgO particles 16. The MgO particles 16 are formed by burning an MgO precursor and satisfy that a/b?1, where a denotes a spectrum integral value in a wavelength region of a CL spectrum from 200 nm to 300 nm, exclusive of 300 nm, and b denotes a spectrum integral value in a wavelength region of the CL spectrum from 300 nm to 550 nm, exclusive of 550 nm.

Abstract: A method for restoring the function of a plasma display panel according to the present invention restores a function of a plasma display panel by raising the temperature of the plasma display panel to 400° C. to 800° C.

Abstract: A gas discharge display panel exhibits a favorable display performance by increasing a wall charge retaining property, controlling a discharge delay for optimal image display, and reducing the discharge starting voltage. A PDP can exhibit enhanced display quality by improving a secondary electron emission factor ? compared to conventional cases and lowering the discharge starting voltage to widen the driving margin. A manufacturing method for a gas discharge display panel can reduce the exhaustion time in the sealing exhaustion process, and driving circuit component costs are reduced. In a gas discharge display panel, a protective layer includes a first and a second protective film, the second protective film is formed on at a least part of a surface of the first protective film. The first protective film has a larger impurity content than the second protective film.

Abstract: A plasma display panel demonstrating excellent image display performance by suppressing generation of initialization bright points through modification of the phosphor layer, and by eliminating variation in discharge characteristics between the discharge cells of each color. In addition to solving these problems, the luminance of the plasma display panel is also enhanced by using the ultraviolet rays emitted in the discharge space in order to promote the production of visible light on the front panel side. Specifically, the phosphor layer (14) is composed of a phosphor component and of MgO powder (16) disposed principally inside the phosphor layer and exposed towards the surface (140) facing the discharge space in order to impart secondary electron emission characteristics.

Abstract: A plasma display device has a crystal particle made of MgO single crystal where the cathode luminescence emission spectrum exhibits a desired characteristic, and displays an image by a driving method in the initializing period. The initializing period has the first half for applying the voltage, which gradually increases from a first voltage and to a second voltage, to a second electrode, and the latter half for applying the voltage, which gradually decreases from a third voltage and to a fourth voltage.

Abstract: Protective layer of a plasma display panel has base protective layer and particle layer. Base protective layer is formed of a thin film of metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. Particle layer is formed by sticking, to base protective layer, single crystal particles of magnesium oxide where the peak at 200 to 300 nm is two or more times that at 300 to 550 nm in a cathode luminescence emission spectrum. The panel driving circuit causes initializing discharge for producing wall charge in the first subfield, of a plurality of subfields, causes address discharge for erasing wall charge in address periods of the plurality of subfields, and drives the panel.

Abstract: A protective layer of a plasma display panel has a base protective layer formed of a thin film of a metal oxide, and a particle layer. The particle layer is formed by sticking, to the base protective layer, single-crystal particles of magnesium oxide such that the emission intensity of a peak at 200 nm to 300 nm is at least twice the emission intensity of a peak at 300 nm to 550 nm in an emission spectrum of cathode luminescence light emission. A panel driving circuit drives the panel in a manner that a second subfield group having a plurality of subfields is temporally disposed after a first subfield group having a plurality of subfields to form one field period. Each subfield of the first subfield group has initializing period (Ti), address period (Tw) for forming wall charge to cause a sustain discharge, and sustain period (Ts). Each subfield of the second subfield group has address period (Tw) for erasing wall charge necessary for causing a sustain discharge, and sustain period (Ts).

Abstract: Protective layer of front plate of the plasma display panel is formed of base protective layer and particle layer. Base protective layer is a thin film of metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. Particle layer is formed in a manner that single-crystal particles of magnesium oxide having a peak of emission intensity at 200-300 nm two times or higher than another peak of emission intensity at 300-550 nm in the emission spectrum in cathode luminescence emission are stuck on base protective layer. The panel driving circuit drives the panel with a subfield structure in which the subfields are temporally disposed so that magnitude of luminance weight has monotonous decrease from a subfield where the all-cell initializing operation is performed to a subfield where the next all-cell initializing operation is performed.

Abstract: The present invention improves discharge characteristics of a protective layer in order to provide a PDP that exhibits excellent display performance even if the PDP is of a fine-cell structure. The present invention also provides a manufacturing method for the PDP. In particular, a protective layer 8 is composed of an MgO film layer 81 and an MgO particle layer 82 that is made of MgO particles 16. The MgO particles 16 are formed by burning an MgO precursor and satisfy that a/b?1, where a denotes a spectrum integral value in a wavelength region of a CL spectrum from 200 nm to 300 nm, exclusive of 300 nm, and b denotes a spectrum integral value in a wavelength region of the CL spectrum from 300 nm to 550 nm, exclusive of 550 nm.

Abstract: A fluorine-containing precoating is formed to cover a phosphor particle by, for example, a physical vapor deposition of a fluoride. Then, a fluorine-containing coating covering the phosphor particle is formed by supplying fluorine into the precoating. This obtained phosphor particle with the coating is applied in the form of a paste to a substrate on each electrode between two adjacent ribs to form a phosphor layer including phosphor particles between the ribs on the substrate. The substrate is positioned with respect to another substrate having electrodes thereon to form discharge spaces between the substrates. The discharge spaces are filled with a discharge gas to produce a plasma display panel.

Abstract: The present invention improves discharge characteristics of a protective layer in order to provide a PDP that exhibits excellent display performance even if the PDP is of a fine-cell structure. The present invention also provides a manufacturing method for the PDP. In particular, a protective layer 8 is composed of an MgO film layer 81 and an MgO particle layer 82 that is made of MgO particles 16. The MgO particles 16 are formed by burning an MgO precursor and satisfy that a/b?1. 2, where a denotes a spectrum integral value in a wavelength region of a CL spectrum from 650 nm to 900 nm, exclusive of 900 nm, and b denotes a spectrum integral value in a wavelength region of the CL spectrum from 300 nm to 550 nm, exclusive of 550 nm.

Abstract: In the plasma display panel of the present invention, a protective layer covers a dielectric layer covering electrodes in discharge cells and faces a discharge space filled with a discharge gas. Here, the discharge gas includes at least one selected from the group consisting of Xe and Kr. In the protective layer, an electron band including at least electrons having energy level of 4 eV or less below a vacuum level is formed within a forbidden band in energy bands.