摘要:
A method of printing a pattern on plates for flat display devices, in which method, in succession, a raised pattern is provided, which is then subjected to a printing process by means of an unpatterned screen-printing screen. For example, a pattern of phosphor dots or electrodes can be provided in this manner. It is also possible to make partitions, which form channels or cells on a plate for a plasma display device or PALC display device.
摘要:
A mixture of ferrous sulphate and alkali metal acid sulphate used in a reducer employed for converting NO.sub.2 to NO in an apparatus for determining the nitrogen oxide content of air by means of the measurement of the reaction of ozone and NO.
摘要:
Plasma display panel in which the fluorescent layer, a dielectric layer having a high relative dielectric constant, is provided between the electrodes and the phosphor(s). This improve the efficacy of the device and lowers minimum sustain voltage and firing voltages.
摘要:
A method of producing a low-pressure mercury vapor discharge lamp which includes positioning a container in the lamp vessel of the lamp between the electrodes. The container holds a quantity of mercury required for operation of the lamp and is attached to a supporting element (wire). The supporting element is connected to a lead-in wire of a first electrode by a metal connecting wire. A direct current discharge is generated between the container and the second electrode, the mercury escapes from the container, thereafter the connection between the supporting element and the lead-in wire is interrupted.
摘要:
A flat panel display apparatus comprises plasma discharge cells, which formed between a first base plate (2a) and a second base plate (1a). The first base plate (2a) has pairs of sustain electrodes (2b, 2c), and a second base plate (1a) has data electrodes (1b). Between said electrodes (2b, 2c, 1b) discharge volumes are formed. The device further has a drive circuit which comprises a circuit for providing data to the discharge cells. The display device comprises a conductive layer (51, 72, 91, 101) on the first (2a) or second substrate (1a) for both of a pair of sustain electrodes (2b, 2c). Said conductive layer (51, 72, 91, 101) extends outside the discharge volume (4) and forms an internal capacitance (Cpar) in the display device which capacitance is in parallel to the capacitance formed in operation by the pair of sustain electrodes and the discharge.
摘要:
Plasma display panel in which the fluorescent layer comprises non-saturating green phosphor(s). This improves the efficacy of UV-light generation and allows the use of higher sustain voltages, leading to further improvement of the efficacy and luminance. The display panel may include driver means for sustaining a generated plasma with a sustain voltage whose peak to peak voltage is at least 400V. This can be combined with existing red and blue phosphor to obtain a desired color.
摘要:
Method of manufacturing a low-pressure mercury vapor discharge lamp (1) comprising a discharge envelope, the glass wall of which comprises at least an (alkaline earth) alkali constituent, a silicon dioxide-containing transparent layer (4) being produced on the inner wall of the discharge envelope.In the method, such a direct current is maintained through the glass that the (positive) (alkaline earth) alkali ions move away from the inner wall and upon heating the said silicon dioxide-containing transparent layer (4) is produced.
摘要:
Device for determining the concentration of vaporous components in a gas current, wherein the gas current reacts in a heated reaction room with ozon and the intensity of the chemiluminescent radiation emitted herewith is measured by a photoelectric cell.
摘要:
A plasma picture screen is provided with a front plate, which comprises a glass plate on which a dielectric layer and a protective layer are provided, with a carrier plate provided with a phosphor layer comprising a red and a blue phosphor as well as a green, Tb3+-activated phosphor, with a ribbed structure that subdivides the space between the front plate and the carrier plate into plasma cells filled with a gas comprising xenon, and with one or several electrode arrays on the front plate and the carrier plate for generating corona discharges in the plasma cells. The gas comprises xenon in a proportion of between 5 and 30% by volume.
摘要:
Plasma display panel in which the fluorescent layer comprises non-saturating green phosphor(s). This improves the efficacy of UV-light generation and allows the use of higher sustain voltages, leading to further improvement of the efficacy and luminance. The display panel may include drive means for sustaining a generated plasma with a sustain voltage whose peak-to-peak voltage is a least 400 V. This can be combined with existing red and blue phosphor to obtain a desired color.