Abstract:
A plasma display panel is disclosed. It can display quality videos and its manufacturing steps can be reduced. A pair of substrates (3), (11) confront each other to form dischargeable space (16) in between. At least front one (3) of the substrates is transparent, and includes display electrodes (6) formed of scan electrodes (4) and sustain electrodes (5), as well as light-blocking sections (7) corresponding to non-dischargeable sections (18) disposed between the display electrodes (6). The other substrate (11) facing to rear includes phosphor layers (15R), (15G), (15B) which emit light by discharging. Each one of display electrodes (6) is formed of transparent electrodes (4a), (5a) and bus electrodes (4b), (5b) which are formed of a plurality of electrode-layers. At least one of the electrode-layers is made of black layer (19) having a specific volume resistance ranging from 1×105 Ωcm to 1×109 Ωcm, and light-blocking sections (7) are made of identical material of black layer (19).
Abstract:
The plasma display panel disclosed has a front substrate and a rear substrate positioned to face each other. The front substrate includes display electrodes provided with scan electrodes and sustain electrodes, and a light-shield provided on a non-discharge area between display electrodes. A rear substrate includes phosphor layers to emit light by discharge. The display electrodes are composed of transparent electrodes, and bus electrodes. The bus electrodes are composed of a plurality of electrode layers and at least one of the electrodes is composed of a black layer having a product of the resistivity and layer thickness of not larger than 2 Ωcm2. A light-shield is composed of a black layer with the resistivity of not smaller than 1×106 Ωcm.
Abstract:
A plasma display device having improved efficiency and increased image quality. This device includes a pair of front and back substrates opposed to each other to form between the substrates a discharge space partitioned by barrier ribs, a plurality of display electrodes each disposed on the front substrate to form a discharge cell between the barrier ribs, a dielectric layer formed above the front substrate to cover the display electrodes, and a phosphor layer which emits light by discharge between the display electrodes. The dielectric layer is constructed of at least two layers of different dielectric constants and is formed with, at its surface closer to the discharge space, a recessed part in each discharge cell. This limits a discharge region, thus realizing highly efficient discharge. The structure having the two layers of different dielectric constants can suppress crosstalk even if this structure has reduced thickness.
Abstract:
There is provided a reproduction camera comprising an optical sensor provided at a location to which light from a light source on the image side can be reached and which is substantially outside the image focal plane and not near by the same, a correcting device by which a quantity of light received by the optical sensor has a relation with a quantity of light received on the image focal plane, and a control system for controlling exposure according to a signal corrected by the correcting device.
Abstract:
A method for obtaining a composite color picture out of a plurality of original pictures and a camera employing the method are disclosed, wherein a plurality of original color picture are selectively exposed on a sheet of film one by one in a sequential manner with appropriate color compensation, magnification or reduction in size, and proper masking conducted upon each exposure. Both photographic film on which to duplicate composite picture and the original pictures are displaced across and on the optical center line of a camera in such a manner that, on the composite photographic picture thus obtained, the original pictures are laid out according to a plan.
Abstract:
An automatic masking device for use in a printer, wherein a reproduction picture to be projected onto a photosensitive film sheet mounted on a holder is masked by a pair of masking plates which are separated at a certain distance away from the surface of the photosensitive film sheet, and are adapted to be movable over the surface of the film sheet so as to open and close the opening distance between the masking plates, and wherein the opening distance between the masking plates is settled by moving the masking plates depending on an magnification and a size of the reproduction picture.
Abstract:
A method of manufacturing display panels includes forming a material layer on a substrate, and baking the material layer formed on substrate which is placed on a supporting bed. The supporting bed is formed of a first supporting bed and a second supporting bed placed on the first supporting bed. A difference in thermal expansion coefficient between the second supporting bed and the substrate is smaller than a difference in thermal expansion coefficient between the first supporting bed and the substrate, and the substrate is placed on the second supporting bed such that the substrate is positioned entirely within the perimeter of the second supporting bed during the baking and heating. This structure allows reduction of scratches on a surface of the substrate.
Abstract:
A plasma display panel capable of restricting the yellowing of a dielectric layer and the occurrence of dielectric breakdown, wherein glass constituting a dielectric layer uses glass containing a metal oxide MO2 capable of a trivalent or tetravalent-ion formation in glass. Accordingly, even when Ag is ionized from an electrode consisting essentially of Ag to diffuse to a dielectric layer, Ag does not aggregate to be formed into a colloid with an ionized state kept. Therefore, yellowing and dielectric breakdown caused by Ag turning to colloid can be restricted.
Abstract:
A plasma display panel includes a first panel member in which a plurality of pairs of display electrodes are arranged so as to be adjacent to each other in a column direction and a second panel member in which a plurality of address electrodes are arranged so as to be adjacent to each other in a row direction, and the first panel member and the second panel member are opposed to each other so that a plurality of cells are formed in a matrix in areas where the plurality of pairs of display electrodes intersect with the plurality of address electrodes. The plasma display panel is characterized in that at least one of an average cell area, an average cell opening ratio and an average visible light transmittance efficiency is greater in a panel central region than in a panel peripheral region.
Abstract:
Barrier ribs 18 formed on a back substrate PA2 are brought into contact with a bonding paste layer 40 having an even surface, applying a bonding agent Bd evenly to the tops of the barrier ribs. Furthermore, a gas discharge panel having a structure in which discharge mainly occurs at locations distanced from parts of the panel connected using the bonding agent Bd is realized.